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    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_26565E08D189A1363E7F6EDBE4246F59_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_26565E08D189A1363E7F6EDBE4246F59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_26565E08D189A1363E7F6EDBE4246F59" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_194C577E76FD397A0FBA6EDBE424C9C5_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_194C577E76FD397A0FBA6EDBE424C9C5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
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    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_F9AD96C1E796F0E6909A6EDBE4247901_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_F9AD96C1E796F0E6909A6EDBE4247901" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_F9AD96C1E796F0E6909A6EDBE4247901_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_F9AD96C1E796F0E6909A6EDBE4247901" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Three</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract" xlink:label="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_614174F6D214620E38E36EDE86F0730A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_0AFF7EF71BF1FDEA96A16EDBE453F823_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_0AFF7EF71BF1FDEA96A16EDBE453F823" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining 2019</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_0AFF7EF71BF1FDEA96A16EDBE453F823_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_0AFF7EF71BF1FDEA96A16EDBE453F823" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_0AFF7EF71BF1FDEA96A16EDBE453F823" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_0AFF7EF71BF1FDEA96A16EDBE453F823" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_0AFF7EF71BF1FDEA96A16EDBE453F823" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_22C54F071DBB6F26F3736EDBE462C862_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_22C54F071DBB6F26F3736EDBE462C862" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_22C54F071DBB6F26F3736EDBE462C862" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_22C54F071DBB6F26F3736EDBE462C862" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_22C54F071DBB6F26F3736EDBE462C862" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_EAB9280E39723F424EC86EDBE4628791_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_EAB9280E39723F424EC86EDBE4628791" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_EAB9280E39723F424EC86EDBE4628791_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_EAB9280E39723F424EC86EDBE4628791" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_EAB9280E39723F424EC86EDBE4628791" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_EAB9280E39723F424EC86EDBE4628791" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_EAB9280E39723F424EC86EDBE4628791" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_BBD0B26A9401BB36268E6EDBE462252D_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_BBD0B26A9401BB36268E6EDBE462252D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2022</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_BBD0B26A9401BB36268E6EDBE462252D_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_BBD0B26A9401BB36268E6EDBE462252D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_BBD0B26A9401BB36268E6EDBE462252D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_BBD0B26A9401BB36268E6EDBE462252D" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_BBD0B26A9401BB36268E6EDBE462252D" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_1A614BFCFE2F750009BE6EDBE472FFE0_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_1A614BFCFE2F750009BE6EDBE472FFE0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_1A614BFCFE2F750009BE6EDBE472FFE0_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_1A614BFCFE2F750009BE6EDBE472FFE0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_1A614BFCFE2F750009BE6EDBE472FFE0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_1A614BFCFE2F750009BE6EDBE472FFE0" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_1A614BFCFE2F750009BE6EDBE472FFE0" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_A9F27F6E5294BB7F90C56EDBE4827341_totalLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_A9F27F6E5294BB7F90C56EDBE4827341" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total lease payments</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_A9F27F6E5294BB7F90C56EDBE4827341_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_A9F27F6E5294BB7F90C56EDBE4827341" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Payments, Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_A9F27F6E5294BB7F90C56EDBE4827341" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_A9F27F6E5294BB7F90C56EDBE4827341" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_A9F27F6E5294BB7F90C56EDBE4827341" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_2195DFF07C97AF3AEC9F6EDBE482B88A_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_2195DFF07C97AF3AEC9F6EDBE482B88A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less: Interest</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_2195DFF07C97AF3AEC9F6EDBE482B88A_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_2195DFF07C97AF3AEC9F6EDBE482B88A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Undiscounted Excess Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_2195DFF07C97AF3AEC9F6EDBE482B88A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_2195DFF07C97AF3AEC9F6EDBE482B88A" xlink:to="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_2195DFF07C97AF3AEC9F6EDBE482B88A" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiability_B36E2A5D2C258C78EA2F6EDBE491E452_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiability_B36E2A5D2C258C78EA2F6EDBE491E452" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Present value of lease liabilities</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiability_B36E2A5D2C258C78EA2F6EDBE491E452_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiability_B36E2A5D2C258C78EA2F6EDBE491E452" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiability" xlink:label="loc_us-gaap_FinanceLeaseLiability_B36E2A5D2C258C78EA2F6EDBE491E452" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiability_B36E2A5D2C258C78EA2F6EDBE491E452" xlink:to="lab_us-gaap_FinanceLeaseLiability_B36E2A5D2C258C78EA2F6EDBE491E452" xlink:type="arc" />
    <link:label id="lab_tnc_LeaseLiabilitiesPaymentsDueAbstract_9DE1E03AC6F854A24A066EDA3AD61B00_label_en-US" xlink:label="lab_tnc_LeaseLiabilitiesPaymentsDueAbstract_9DE1E03AC6F854A24A066EDA3AD61B00" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Liabilities Payments Due [Abstract]</link:label>
    <link:label id="lab_tnc_LeaseLiabilitiesPaymentsDueAbstract_9DE1E03AC6F854A24A066EDA3AD61B00_documentation_en-US" xlink:label="lab_tnc_LeaseLiabilitiesPaymentsDueAbstract_9DE1E03AC6F854A24A066EDA3AD61B00" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease Liabilities Payments Due</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_LeaseLiabilitiesPaymentsDueAbstract" xlink:label="loc_tnc_LeaseLiabilitiesPaymentsDueAbstract_9DE1E03AC6F854A24A066EDA3AD61B00" xlink:type="locator" />
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    <link:label id="lab_tnc_LeaseLiabilitiesPaymentsRemainderofFiscalYear_D95A0DF32262E04BAB976EDCAF54D1A7_terseLabel_en-US" xlink:label="lab_tnc_LeaseLiabilitiesPaymentsRemainderofFiscalYear_D95A0DF32262E04BAB976EDCAF54D1A7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining 2019</link:label>
    <link:label id="lab_tnc_LeaseLiabilitiesPaymentsRemainderofFiscalYear_D95A0DF32262E04BAB976EDCAF54D1A7_label_en-US" xlink:label="lab_tnc_LeaseLiabilitiesPaymentsRemainderofFiscalYear_D95A0DF32262E04BAB976EDCAF54D1A7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Liabilities, Payments Remainder of Fiscal Year</link:label>
    <link:label id="lab_tnc_LeaseLiabilitiesPaymentsRemainderofFiscalYear_D95A0DF32262E04BAB976EDCAF54D1A7_documentation_en-US" xlink:label="lab_tnc_LeaseLiabilitiesPaymentsRemainderofFiscalYear_D95A0DF32262E04BAB976EDCAF54D1A7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease Liabilities, Payments Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_LeaseLiabilitiesPaymentsRemainderofFiscalYear" xlink:label="loc_tnc_LeaseLiabilitiesPaymentsRemainderofFiscalYear_D95A0DF32262E04BAB976EDCAF54D1A7" xlink:type="locator" />
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    <link:label id="lab_tnc_LeaseLiabilitiesPaymentsDueYearTwo_42DFFD64E9ABBCDC08226EDCAF54D0F1_terseLabel_en-US" xlink:label="lab_tnc_LeaseLiabilitiesPaymentsDueYearTwo_42DFFD64E9ABBCDC08226EDCAF54D0F1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
    <link:label id="lab_tnc_LeaseLiabilitiesPaymentsDueYearTwo_42DFFD64E9ABBCDC08226EDCAF54D0F1_label_en-US" xlink:label="lab_tnc_LeaseLiabilitiesPaymentsDueYearTwo_42DFFD64E9ABBCDC08226EDCAF54D0F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Liabilities, Payments Due Year Two</link:label>
    <link:label id="lab_tnc_LeaseLiabilitiesPaymentsDueYearTwo_42DFFD64E9ABBCDC08226EDCAF54D0F1_documentation_en-US" xlink:label="lab_tnc_LeaseLiabilitiesPaymentsDueYearTwo_42DFFD64E9ABBCDC08226EDCAF54D0F1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease Liabilities, Payments Due Year Two</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_LeaseLiabilitiesPaymentsDueYearTwo" xlink:label="loc_tnc_LeaseLiabilitiesPaymentsDueYearTwo_42DFFD64E9ABBCDC08226EDCAF54D0F1" xlink:type="locator" />
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    <link:label id="lab_tnc_LeaseLiabilitiesPaymentsDueYearThree_27A2AFEE0C6492CD3A076EDCAF544518_terseLabel_en-US" xlink:label="lab_tnc_LeaseLiabilitiesPaymentsDueYearThree_27A2AFEE0C6492CD3A076EDCAF544518" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
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    <link:label id="lab_tnc_LeaseLiabilitiesPaymentsDueYearThree_27A2AFEE0C6492CD3A076EDCAF544518_documentation_en-US" xlink:label="lab_tnc_LeaseLiabilitiesPaymentsDueYearThree_27A2AFEE0C6492CD3A076EDCAF544518" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease Liabilities, Payments Due Year Three</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_LeaseLiabilitiesPaymentsDueYearThree" xlink:label="loc_tnc_LeaseLiabilitiesPaymentsDueYearThree_27A2AFEE0C6492CD3A076EDCAF544518" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_EA2FAD8A868DA4BBB71F6E73FDB31E8B_totalLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_EA2FAD8A868DA4BBB71F6E73FDB31E8B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Carrying value</link:label>
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    <link:label id="lab_tnc_Periodoftimefollowingasalethemajorityofclaimsarepaidmax_49602C0E93148BF397B75FC6EAD28C4D_documentation_en-US" xlink:label="lab_tnc_Periodoftimefollowingasalethemajorityofclaimsarepaidmax_49602C0E93148BF397B75FC6EAD28C4D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The typical range of period of time following a sale the majority of warranty claims are paid out on the high end of the range.</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_tnc_Periodoftimefollowingasalethemajorityofclaimsarepaidmax_49602C0E93148BF397B75FC6EAD28C4D" xlink:to="lab_tnc_Periodoftimefollowingasalethemajorityofclaimsarepaidmax_49602C0E93148BF397B75FC6EAD28C4D" xlink:type="arc" />
    <link:label id="lab_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_08E45D692596A0BDAB9A5FC6EAD20A1A_terseLabel_en-US" xlink:label="lab_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_08E45D692596A0BDAB9A5FC6EAD20A1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in warranty reserves</link:label>
    <link:label id="lab_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_08E45D692596A0BDAB9A5FC6EAD20A1A_label_en-US" xlink:label="lab_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_08E45D692596A0BDAB9A5FC6EAD20A1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Movement in Standard Product Warranty Accrual [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MovementInStandardProductWarrantyAccrualRollForward" xlink:label="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_08E45D692596A0BDAB9A5FC6EAD20A1A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_08E45D692596A0BDAB9A5FC6EAD20A1A" xlink:to="lab_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_08E45D692596A0BDAB9A5FC6EAD20A1A" xlink:type="arc" />
    <link:label id="lab_us-gaap_StandardProductWarrantyAccrual_2BF7E5C99AF999ABCE505FC6EAD276DB_periodStartLabel_en-US" xlink:label="lab_us-gaap_StandardProductWarrantyAccrual_2BF7E5C99AF999ABCE505FC6EAD276DB" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:label id="lab_us-gaap_StandardProductWarrantyAccrual_2BF7E5C99AF999ABCE505FC6EAD276DB_label_en-US" xlink:label="lab_us-gaap_StandardProductWarrantyAccrual_2BF7E5C99AF999ABCE505FC6EAD276DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standard Product Warranty Accrual</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StandardProductWarrantyAccrual" xlink:label="loc_us-gaap_StandardProductWarrantyAccrual_2BF7E5C99AF999ABCE505FC6EAD276DB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StandardProductWarrantyAccrual_2BF7E5C99AF999ABCE505FC6EAD276DB" xlink:to="lab_us-gaap_StandardProductWarrantyAccrual_2BF7E5C99AF999ABCE505FC6EAD276DB" xlink:type="arc" />
    <link:label id="lab_us-gaap_StandardProductWarrantyAccrualWarrantiesIssued_BF77B850DFE35CE1D6B75FC6EAD230CA_terseLabel_en-US" xlink:label="lab_us-gaap_StandardProductWarrantyAccrualWarrantiesIssued_BF77B850DFE35CE1D6B75FC6EAD230CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additions charged to expense</link:label>
    <link:label id="lab_us-gaap_StandardProductWarrantyAccrualWarrantiesIssued_BF77B850DFE35CE1D6B75FC6EAD230CA_label_en-US" xlink:label="lab_us-gaap_StandardProductWarrantyAccrualWarrantiesIssued_BF77B850DFE35CE1D6B75FC6EAD230CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standard Product Warranty Accrual, Increase for Warranties Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StandardProductWarrantyAccrualWarrantiesIssued" xlink:label="loc_us-gaap_StandardProductWarrantyAccrualWarrantiesIssued_BF77B850DFE35CE1D6B75FC6EAD230CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StandardProductWarrantyAccrualWarrantiesIssued_BF77B850DFE35CE1D6B75FC6EAD230CA" xlink:to="lab_us-gaap_StandardProductWarrantyAccrualWarrantiesIssued_BF77B850DFE35CE1D6B75FC6EAD230CA" xlink:type="arc" />
    <link:label id="lab_us-gaap_StandardProductWarrantyAccrualForeignCurrencyTranslationGainLoss_4E316132010F15EB543D5FC6EAD2F09F_terseLabel_en-US" xlink:label="lab_us-gaap_StandardProductWarrantyAccrualForeignCurrencyTranslationGainLoss_4E316132010F15EB543D5FC6EAD2F09F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency fluctuations</link:label>
    <link:label id="lab_us-gaap_StandardProductWarrantyAccrualForeignCurrencyTranslationGainLoss_4E316132010F15EB543D5FC6EAD2F09F_label_en-US" xlink:label="lab_us-gaap_StandardProductWarrantyAccrualForeignCurrencyTranslationGainLoss_4E316132010F15EB543D5FC6EAD2F09F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standard Product Warranty Accrual, Foreign Currency Translation Gain (Loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StandardProductWarrantyAccrualForeignCurrencyTranslationGainLoss" xlink:label="loc_us-gaap_StandardProductWarrantyAccrualForeignCurrencyTranslationGainLoss_4E316132010F15EB543D5FC6EAD2F09F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StandardProductWarrantyAccrualForeignCurrencyTranslationGainLoss_4E316132010F15EB543D5FC6EAD2F09F" xlink:to="lab_us-gaap_StandardProductWarrantyAccrualForeignCurrencyTranslationGainLoss_4E316132010F15EB543D5FC6EAD2F09F" xlink:type="arc" />
    <link:label id="lab_us-gaap_StandardProductWarrantyAccrualPayments_6E397B4325C38C70215A5FC6EAD24453_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_StandardProductWarrantyAccrualPayments_6E397B4325C38C70215A5FC6EAD24453" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Claims paid</link:label>
    <link:label id="lab_us-gaap_StandardProductWarrantyAccrualPayments_6E397B4325C38C70215A5FC6EAD24453_label_en-US" xlink:label="lab_us-gaap_StandardProductWarrantyAccrualPayments_6E397B4325C38C70215A5FC6EAD24453" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standard Product Warranty Accrual, Decrease for Payments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StandardProductWarrantyAccrualPayments" xlink:label="loc_us-gaap_StandardProductWarrantyAccrualPayments_6E397B4325C38C70215A5FC6EAD24453" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StandardProductWarrantyAccrualPayments_6E397B4325C38C70215A5FC6EAD24453" xlink:to="lab_us-gaap_StandardProductWarrantyAccrualPayments_6E397B4325C38C70215A5FC6EAD24453" xlink:type="arc" />
    <link:label id="lab_us-gaap_StandardProductWarrantyAccrual_BC57AE557A2F36B1A0C75FC6EAD28D0F_periodEndLabel_en-US" xlink:label="lab_us-gaap_StandardProductWarrantyAccrual_BC57AE557A2F36B1A0C75FC6EAD28D0F" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StandardProductWarrantyAccrual" xlink:label="loc_us-gaap_StandardProductWarrantyAccrual_BC57AE557A2F36B1A0C75FC6EAD28D0F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StandardProductWarrantyAccrual_BC57AE557A2F36B1A0C75FC6EAD28D0F" xlink:to="lab_us-gaap_StandardProductWarrantyAccrual_BC57AE557A2F36B1A0C75FC6EAD28D0F" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtDisclosureTextBlock_E7D4F87FCCDD5D2CAED5EB2A6E4C880C_terseLabel_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_9DF77693A11F5C899CB4794C386B06C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt</link:label>
    <link:label id="lab_us-gaap_DebtDisclosureTextBlock_E7D4F87FCCDD5D2CAED5EB2A6E4C880C_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_9DF77693A11F5C899CB4794C386B06C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="loc_us-gaap_DebtDisclosureTextBlock_9DF77693A11F5C899CB4794C386B06C3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureTextBlock_9DF77693A11F5C899CB4794C386B06C3" xlink:to="lab_us-gaap_DebtDisclosureTextBlock_9DF77693A11F5C899CB4794C386B06C3" xlink:type="arc" />
    <link:label id="lab_tnc_ContractwithCustomerContractLiabilityRollForward_2C2856360F1AF8368A8B6E174C2CF6EC_terseLabel_en-US" xlink:label="lab_tnc_ContractwithCustomerContractLiabilityRollForward_2C2856360F1AF8368A8B6E174C2CF6EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract with Customer, Contract Liability [Roll Forward]</link:label>
    <link:label id="lab_tnc_ContractwithCustomerContractLiabilityRollForward_2C2856360F1AF8368A8B6E174C2CF6EC_label_en-US" xlink:label="lab_tnc_ContractwithCustomerContractLiabilityRollForward_2C2856360F1AF8368A8B6E174C2CF6EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Contract Liability [Roll Forward]</link:label>
    <link:label id="lab_tnc_ContractwithCustomerContractLiabilityRollForward_2C2856360F1AF8368A8B6E174C2CF6EC_documentation_en-US" xlink:label="lab_tnc_ContractwithCustomerContractLiabilityRollForward_2C2856360F1AF8368A8B6E174C2CF6EC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contract with Customer, Contract Liability</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_ContractwithCustomerContractLiabilityRollForward" xlink:label="loc_tnc_ContractwithCustomerContractLiabilityRollForward_2C2856360F1AF8368A8B6E174C2CF6EC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_tnc_ContractwithCustomerContractLiabilityRollForward_2C2856360F1AF8368A8B6E174C2CF6EC" xlink:to="lab_tnc_ContractwithCustomerContractLiabilityRollForward_2C2856360F1AF8368A8B6E174C2CF6EC" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerRefundLiability_99A2E3934D70CB05F8EE6E174C2C5EBC_periodStartLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerRefundLiability_99A2E3934D70CB05F8EE6E174C2C5EBC" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerRefundLiability_99A2E3934D70CB05F8EE6E174C2C5EBC_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerRefundLiability_99A2E3934D70CB05F8EE6E174C2C5EBC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Refund Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerRefundLiability" xlink:label="loc_us-gaap_ContractWithCustomerRefundLiability_99A2E3934D70CB05F8EE6E174C2C5EBC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerRefundLiability_99A2E3934D70CB05F8EE6E174C2C5EBC" xlink:to="lab_us-gaap_ContractWithCustomerRefundLiability_99A2E3934D70CB05F8EE6E174C2C5EBC" xlink:type="arc" />
    <link:label id="lab_tnc_ContractwithCustomerLiabilityIncreaseDecreaseforSalesIncentiveAccruals_40B9F9A2B4769A4D31126E174C2CF6A0_terseLabel_en-US" xlink:label="lab_tnc_ContractwithCustomerLiabilityIncreaseDecreaseforSalesIncentiveAccruals_40B9F9A2B4769A4D31126E174C2CF6A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additions to sales incentive accrual</link:label>
    <link:label id="lab_tnc_ContractwithCustomerLiabilityIncreaseDecreaseforSalesIncentiveAccruals_40B9F9A2B4769A4D31126E174C2CF6A0_label_en-US" xlink:label="lab_tnc_ContractwithCustomerLiabilityIncreaseDecreaseforSalesIncentiveAccruals_40B9F9A2B4769A4D31126E174C2CF6A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability, Increase (Decrease) for Sales Incentive Accruals</link:label>
    <link:label id="lab_tnc_ContractwithCustomerLiabilityIncreaseDecreaseforSalesIncentiveAccruals_40B9F9A2B4769A4D31126E174C2CF6A0_documentation_en-US" xlink:label="lab_tnc_ContractwithCustomerLiabilityIncreaseDecreaseforSalesIncentiveAccruals_40B9F9A2B4769A4D31126E174C2CF6A0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability, Increase (Decrease) for Sales Incentive Accruals</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_ContractwithCustomerLiabilityIncreaseDecreaseforSalesIncentiveAccruals" xlink:label="loc_tnc_ContractwithCustomerLiabilityIncreaseDecreaseforSalesIncentiveAccruals_40B9F9A2B4769A4D31126E174C2CF6A0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_tnc_ContractwithCustomerLiabilityIncreaseDecreaseforSalesIncentiveAccruals_40B9F9A2B4769A4D31126E174C2CF6A0" xlink:to="lab_tnc_ContractwithCustomerLiabilityIncreaseDecreaseforSalesIncentiveAccruals_40B9F9A2B4769A4D31126E174C2CF6A0" xlink:type="arc" />
    <link:label id="lab_tnc_ContractwithCustomerLiabilityContractPayments_58AC156E1C7CD9677F5A6E174C2C00E5_negatedTerseLabel_en-US" xlink:label="lab_tnc_ContractwithCustomerLiabilityContractPayments_58AC156E1C7CD9677F5A6E174C2C00E5" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Contract payments</link:label>
    <link:label id="lab_tnc_ContractwithCustomerLiabilityContractPayments_58AC156E1C7CD9677F5A6E174C2C00E5_label_en-US" xlink:label="lab_tnc_ContractwithCustomerLiabilityContractPayments_58AC156E1C7CD9677F5A6E174C2C00E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability, Contract Payments</link:label>
    <link:label id="lab_tnc_ContractwithCustomerLiabilityContractPayments_58AC156E1C7CD9677F5A6E174C2C00E5_documentation_en-US" xlink:label="lab_tnc_ContractwithCustomerLiabilityContractPayments_58AC156E1C7CD9677F5A6E174C2C00E5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability, Contract Payments</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_ContractwithCustomerLiabilityContractPayments" xlink:label="loc_tnc_ContractwithCustomerLiabilityContractPayments_58AC156E1C7CD9677F5A6E174C2C00E5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_tnc_ContractwithCustomerLiabilityContractPayments_58AC156E1C7CD9677F5A6E174C2C00E5" xlink:to="lab_tnc_ContractwithCustomerLiabilityContractPayments_58AC156E1C7CD9677F5A6E174C2C00E5" xlink:type="arc" />
    <link:label id="lab_tnc_ContractwithCustomerLiabilityImpactofForeignCurrency_6668D3B65F0266DBDEC56E174C2CA7E2_terseLabel_en-US" xlink:label="lab_tnc_ContractwithCustomerLiabilityImpactofForeignCurrency_6668D3B65F0266DBDEC56E174C2CA7E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency fluctuations</link:label>
    <link:label id="lab_tnc_ContractwithCustomerLiabilityImpactofForeignCurrency_6668D3B65F0266DBDEC56E174C2CA7E2_label_en-US" xlink:label="lab_tnc_ContractwithCustomerLiabilityImpactofForeignCurrency_6668D3B65F0266DBDEC56E174C2CA7E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability, Impact of Foreign Currency</link:label>
    <link:label id="lab_tnc_ContractwithCustomerLiabilityImpactofForeignCurrency_6668D3B65F0266DBDEC56E174C2CA7E2_documentation_en-US" xlink:label="lab_tnc_ContractwithCustomerLiabilityImpactofForeignCurrency_6668D3B65F0266DBDEC56E174C2CA7E2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability, Impact of Foreign Currency</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_ContractwithCustomerLiabilityImpactofForeignCurrency" xlink:label="loc_tnc_ContractwithCustomerLiabilityImpactofForeignCurrency_6668D3B65F0266DBDEC56E174C2CA7E2" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ContractWithCustomerRefundLiability_C6295FFFC722E79DEC166E174C2C0534_periodEndLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerRefundLiability_C6295FFFC722E79DEC166E174C2C0534" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
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    <link:label id="lab_tnc_EquipmentSalesMember_88A4894F544E9C8A3C6AE4D84B1BBCC2_terseLabel_en-US" xlink:label="lab_tnc_EquipmentSalesMember_88A4894F544E9C8A3C6AE4D84B1BBCC2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equipment</link:label>
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    <link:label id="lab_tnc_InventoriesCarriedAtLifoAbstract_F21C39B263BC82BCF7FD691EB436248D_terseLabel_en-US" xlink:label="lab_tnc_InventoriesCarriedAtLifoAbstract_F21C39B263BC82BCF7FD691EB436248D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories carried at LIFO:</link:label>
    <link:label id="lab_tnc_InventoriesCarriedAtLifoAbstract_F21C39B263BC82BCF7FD691EB436248D_label_en-US" xlink:label="lab_tnc_InventoriesCarriedAtLifoAbstract_F21C39B263BC82BCF7FD691EB436248D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventories carried at LIFO [Abstract]</link:label>
    <link:label id="lab_tnc_InventoriesCarriedAtLifoAbstract_F21C39B263BC82BCF7FD691EB436248D_documentation_en-US" xlink:label="lab_tnc_InventoriesCarriedAtLifoAbstract_F21C39B263BC82BCF7FD691EB436248D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US" />
    <link:loc xlink:href="tnc-20190331.xsd#tnc_InventoriesCarriedAtLifoAbstract" xlink:label="loc_tnc_InventoriesCarriedAtLifoAbstract_F21C39B263BC82BCF7FD691EB436248D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_tnc_InventoriesCarriedAtLifoAbstract_F21C39B263BC82BCF7FD691EB436248D" xlink:to="lab_tnc_InventoriesCarriedAtLifoAbstract_F21C39B263BC82BCF7FD691EB436248D" xlink:type="arc" />
    <link:label id="lab_tnc_InventoryFinishedGoodsLifo_52882BD2280F90AB9767691EB436E62F_terseLabel_en-US" xlink:label="lab_tnc_InventoryFinishedGoodsLifo_52882BD2280F90AB9767691EB436E62F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finished goods</link:label>
    <link:label id="lab_tnc_InventoryFinishedGoodsLifo_52882BD2280F90AB9767691EB436E62F_label_en-US" xlink:label="lab_tnc_InventoryFinishedGoodsLifo_52882BD2280F90AB9767691EB436E62F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Finished goods LIFO</link:label>
    <link:label id="lab_tnc_InventoryFinishedGoodsLifo_52882BD2280F90AB9767691EB436E62F_documentation_en-US" xlink:label="lab_tnc_InventoryFinishedGoodsLifo_52882BD2280F90AB9767691EB436E62F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The aggregate gross carrying amount as of the balance sheet date of merchandise or goods (LIFO) held by the company that are readily available for sale.</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_InventoryFinishedGoodsLifo" xlink:label="loc_tnc_InventoryFinishedGoodsLifo_52882BD2280F90AB9767691EB436E62F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_tnc_InventoryFinishedGoodsLifo_52882BD2280F90AB9767691EB436E62F" xlink:to="lab_tnc_InventoryFinishedGoodsLifo_52882BD2280F90AB9767691EB436E62F" xlink:type="arc" />
    <link:label id="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessLifo_902574629FB3FEA971E3691EB436DA2B_terseLabel_en-US" xlink:label="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessLifo_902574629FB3FEA971E3691EB436DA2B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Raw materials, production parts and work-in-process</link:label>
    <link:label id="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessLifo_902574629FB3FEA971E3691EB436DA2B_label_en-US" xlink:label="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessLifo_902574629FB3FEA971E3691EB436DA2B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Raw materials, production parts and work-in-process, LIFO</link:label>
    <link:label id="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessLifo_902574629FB3FEA971E3691EB436DA2B_documentation_en-US" xlink:label="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessLifo_902574629FB3FEA971E3691EB436DA2B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The aggregate gross carrying amount (LIFO) as of the balance sheet date of items held by the entity which are partially completed at the time of measurement and unprocessed items that will go through the production process and become part of the final product.</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessLifo" xlink:label="loc_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessLifo_902574629FB3FEA971E3691EB436DA2B" xlink:type="locator" />
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    <link:label id="lab_us-gaap_InventoryLIFOReserve_206B98EF398C3C3D7933691EB4369509_label_en-US" xlink:label="lab_us-gaap_InventoryLIFOReserve_206B98EF398C3C3D7933691EB4369509" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, LIFO Reserve</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryLIFOReserve" xlink:label="loc_us-gaap_InventoryLIFOReserve_206B98EF398C3C3D7933691EB4369509" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LIFOInventoryAmount_0F44D50674FAACF4AB20691EB436B76B_totalLabel_en-US" xlink:label="lab_us-gaap_LIFOInventoryAmount_0F44D50674FAACF4AB20691EB436B76B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total LIFO inventories</link:label>
    <link:label id="lab_us-gaap_LIFOInventoryAmount_0F44D50674FAACF4AB20691EB436B76B_label_en-US" xlink:label="lab_us-gaap_LIFOInventoryAmount_0F44D50674FAACF4AB20691EB436B76B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">LIFO Inventory Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LIFOInventoryAmount" xlink:label="loc_us-gaap_LIFOInventoryAmount_0F44D50674FAACF4AB20691EB436B76B" xlink:type="locator" />
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    <link:label id="lab_tnc_InventoriesCarriedAtFifoAbstract_1A00DF37681DF7C721D0691EB4362234_terseLabel_en-US" xlink:label="lab_tnc_InventoriesCarriedAtFifoAbstract_1A00DF37681DF7C721D0691EB4362234" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories carried at FIFO:</link:label>
    <link:label id="lab_tnc_InventoriesCarriedAtFifoAbstract_1A00DF37681DF7C721D0691EB4362234_label_en-US" xlink:label="lab_tnc_InventoriesCarriedAtFifoAbstract_1A00DF37681DF7C721D0691EB4362234" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventories carried at FIFO [Abstract]</link:label>
    <link:label id="lab_tnc_InventoriesCarriedAtFifoAbstract_1A00DF37681DF7C721D0691EB4362234_documentation_en-US" xlink:label="lab_tnc_InventoriesCarriedAtFifoAbstract_1A00DF37681DF7C721D0691EB4362234" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US" />
    <link:loc xlink:href="tnc-20190331.xsd#tnc_InventoriesCarriedAtFifoAbstract" xlink:label="loc_tnc_InventoriesCarriedAtFifoAbstract_1A00DF37681DF7C721D0691EB4362234" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_tnc_InventoriesCarriedAtFifoAbstract_1A00DF37681DF7C721D0691EB4362234" xlink:to="lab_tnc_InventoriesCarriedAtFifoAbstract_1A00DF37681DF7C721D0691EB4362234" xlink:type="arc" />
    <link:label id="lab_tnc_InventoryFinishedGoodsFifo_0ECF30FBEC9F16733FB0691EB4454C7D_terseLabel_en-US" xlink:label="lab_tnc_InventoryFinishedGoodsFifo_0ECF30FBEC9F16733FB0691EB4454C7D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventory, Finished goods, FIFO</link:label>
    <link:label id="lab_tnc_InventoryFinishedGoodsFifo_0ECF30FBEC9F16733FB0691EB4454C7D_label_en-US" xlink:label="lab_tnc_InventoryFinishedGoodsFifo_0ECF30FBEC9F16733FB0691EB4454C7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Finished goods, FIFO</link:label>
    <link:label id="lab_tnc_InventoryFinishedGoodsFifo_0ECF30FBEC9F16733FB0691EB4454C7D_documentation_en-US" xlink:label="lab_tnc_InventoryFinishedGoodsFifo_0ECF30FBEC9F16733FB0691EB4454C7D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Carrying amount as of the balance sheet date of merchandise or goods (FIFO) held by the company that are readily available for sale.</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_InventoryFinishedGoodsFifo" xlink:label="loc_tnc_InventoryFinishedGoodsFifo_0ECF30FBEC9F16733FB0691EB4454C7D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_tnc_InventoryFinishedGoodsFifo_0ECF30FBEC9F16733FB0691EB4454C7D" xlink:to="lab_tnc_InventoryFinishedGoodsFifo_0ECF30FBEC9F16733FB0691EB4454C7D" xlink:type="arc" />
    <link:label id="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessFifo_084C0633A4CFD8717B5B691EB445C7A5_terseLabel_en-US" xlink:label="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessFifo_084C0633A4CFD8717B5B691EB445C7A5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Raw materials, production parts and work-in-process</link:label>
    <link:label id="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessFifo_084C0633A4CFD8717B5B691EB445C7A5_label_en-US" xlink:label="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessFifo_084C0633A4CFD8717B5B691EB445C7A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Raw materials, production parts and work-in-process, FIFO</link:label>
    <link:label id="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessFifo_084C0633A4CFD8717B5B691EB445C7A5_documentation_en-US" xlink:label="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessFifo_084C0633A4CFD8717B5B691EB445C7A5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The aggregate carrying amount (FIFO) as of the balance sheet date of items held by the entity which are partially completed at the time of measurement and unprocessed items that will go through the production process and become part of the final product.</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessFifo" xlink:label="loc_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessFifo_084C0633A4CFD8717B5B691EB445C7A5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessFifo_084C0633A4CFD8717B5B691EB445C7A5" xlink:to="lab_tnc_InventoryRawMaterialsProductionPartsAndWorkInProcessFifo_084C0633A4CFD8717B5B691EB445C7A5" xlink:type="arc" />
    <link:label id="lab_us-gaap_FIFOInventoryAmount_17A42F3A7F4DF5BA39DB691EB445BEA2_totalLabel_en-US" xlink:label="lab_us-gaap_FIFOInventoryAmount_17A42F3A7F4DF5BA39DB691EB445BEA2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total FIFO inventories</link:label>
    <link:label id="lab_us-gaap_FIFOInventoryAmount_17A42F3A7F4DF5BA39DB691EB445BEA2_label_en-US" xlink:label="lab_us-gaap_FIFOInventoryAmount_17A42F3A7F4DF5BA39DB691EB445BEA2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">FIFO Inventory Amount</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FIFOInventoryAmount_17A42F3A7F4DF5BA39DB691EB445BEA2" xlink:to="lab_us-gaap_FIFOInventoryAmount_17A42F3A7F4DF5BA39DB691EB445BEA2" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryNet_B56423485F9A1EFEF10A691EB44587CC_totalLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_B56423485F9A1EFEF10A691EB44587CC" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total inventories</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_B56423485F9A1EFEF10A691EB44587CC" xlink:type="locator" />
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    <link:label id="lab_tnc_LeasesTableTextBlock_D3E86F7732C2DAFF098F61533732B1F0_terseLabel_en-US" xlink:label="lab_tnc_LeasesTableTextBlock_D3E86F7732C2DAFF098F61533732B1F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Lease Assets and Liabilities</link:label>
    <link:label id="lab_tnc_LeasesTableTextBlock_D3E86F7732C2DAFF098F61533732B1F0_label_en-US" xlink:label="lab_tnc_LeasesTableTextBlock_D3E86F7732C2DAFF098F61533732B1F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Leases [Table Text Block]</link:label>
    <link:label id="lab_tnc_LeasesTableTextBlock_D3E86F7732C2DAFF098F61533732B1F0_documentation_en-US" xlink:label="lab_tnc_LeasesTableTextBlock_D3E86F7732C2DAFF098F61533732B1F0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Leases [Table Text Block]</link:label>
    <link:loc xlink:href="tnc-20190331.xsd#tnc_LeasesTableTextBlock" xlink:label="loc_tnc_LeasesTableTextBlock_D3E86F7732C2DAFF098F61533732B1F0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_tnc_LeasesTableTextBlock_D3E86F7732C2DAFF098F61533732B1F0" xlink:to="lab_tnc_LeasesTableTextBlock_D3E86F7732C2DAFF098F61533732B1F0" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeaseCostTableTextBlock_D77C311C4015FC9F3A4661533732E56C_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseCostTableTextBlock_D77C311C4015FC9F3A4661533732E56C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Lease Costs and Terms</link:label>
    <link:label id="lab_us-gaap_LeaseCostTableTextBlock_D77C311C4015FC9F3A4661533732E56C_label_en-US" xlink:label="lab_us-gaap_LeaseCostTableTextBlock_D77C311C4015FC9F3A4661533732E56C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease, Cost [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeaseCostTableTextBlock" xlink:label="loc_us-gaap_LeaseCostTableTextBlock_D77C311C4015FC9F3A4661533732E56C" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_D1E43C8AA85742AEEF85615337322AC4_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_D1E43C8AA85742AEEF85615337322AC4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Maturity [Table Text Block]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_D1E43C8AA85742AEEF85615337322AC4" xlink:type="locator" />
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    <link:label id="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsRemainderofFiscalYear_EE8E06A89E7F3FF00EAC6EDA3B05E36E_terseLabel_en-US" xlink:label="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsRemainderofFiscalYear_EE8E06A89E7F3FF00EAC6EDA3B05E36E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining 2018</link:label>
    <link:label id="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsRemainderofFiscalYear_EE8E06A89E7F3FF00EAC6EDA3B05E36E_label_en-US" xlink:label="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsRemainderofFiscalYear_EE8E06A89E7F3FF00EAC6EDA3B05E36E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Finance Lease, Liability, Payments, Remainder of Fiscal Year</link:label>
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    <link:label id="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueinTwoYears_89F755182F5BD15D16216EDA3B0544E9_terseLabel_en-US" xlink:label="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueinTwoYears_89F755182F5BD15D16216EDA3B0544E9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2019</link:label>
    <link:label id="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueinTwoYears_89F755182F5BD15D16216EDA3B0544E9_label_en-US" xlink:label="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueinTwoYears_89F755182F5BD15D16216EDA3B0544E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Finance Lease, Liability, Payments, Due in Two Years</link:label>
    <link:label id="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueinTwoYears_89F755182F5BD15D16216EDA3B0544E9_documentation_en-US" xlink:label="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueinTwoYears_89F755182F5BD15D16216EDA3B0544E9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Finance Lease, Liability, Payments, Due in Two Years</link:label>
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    <link:label id="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueinThreeYears_13E1442BF0E575B0072B6EDA3B05317A_terseLabel_en-US" xlink:label="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueinThreeYears_13E1442BF0E575B0072B6EDA3B05317A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
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    <link:label id="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueinFourYears_A49D2DAA517037B1357D6EDA3B05B608_terseLabel_en-US" xlink:label="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueinFourYears_A49D2DAA517037B1357D6EDA3B05B608" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
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    <link:label id="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueinFiveYears_05D618D351D77E0A94EE6EDA3B0582DE_terseLabel_en-US" xlink:label="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueinFiveYears_05D618D351D77E0A94EE6EDA3B0582DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2022</link:label>
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    <link:label id="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueafterFiveYears_BB44BB377C9F45CB9FFD6EDA3B053E0D_terseLabel_en-US" xlink:label="lab_tnc_LesseeFinanceLeaseLiabilityPaymentsDueafterFiveYears_BB44BB377C9F45CB9FFD6EDA3B053E0D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
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    <link:label id="lab_tnc_RevenueFromContractWithCustomerFuturePerformanceObligationsSatisfiedRemainderofFiscalYear_701C660F488C49F315556E174C2CF4C8_terseLabel_en-US" xlink:label="lab_tnc_RevenueFromContractWithCustomerFuturePerformanceObligationsSatisfiedRemainderofFiscalYear_701C660F488C49F315556E174C2CF4C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining 2019</link:label>
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    <link:label id="lab_tnc_RevenueFromContractWithCustomerFuturePerformanceObligationsSatisfiedDueinTwoYears_4C61B360FF3DC75E39CD6E174C2C3D71_terseLabel_en-US" xlink:label="lab_tnc_RevenueFromContractWithCustomerFuturePerformanceObligationsSatisfiedDueinTwoYears_4C61B360FF3DC75E39CD6E174C2C3D71" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
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