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Cover - USD ($)
 12 Months Ended
Dec. 31, 2022
Mar. 01, 2023
Jun. 30, 2022
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2022    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2022    
Current Fiscal Year End Date --12-31    
Entity File Number 000-51372    
Entity Registrant Name Omega Flex, Inc.    
Entity Central Index Key 0001317945    
Entity Tax Identification Number 23-1948942    
Entity Incorporation, State or Country Code PA    
Entity Address, Address Line One 451 Creamery Way    
Entity Address, City or Town Exton    
Entity Address, State or Province PA    
Entity Address, Postal Zip Code 19341    
City Area Code 610    
Local Phone Number 524-7272    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol OFLX    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 348,483,353
Entity Common Stock, Shares Outstanding   10,094,322  
Dcuments IncorporatedByReference The information required by Part III (Items 10, 11, 12, 13, and 14) is incorporated by reference from the registrant’s definitive proxy statement (to be filed pursuant to Regulation 14A no later than 120 days after the year ended December 31, 2022, or April 30, 2023) for the 2023 annual meeting of shareholders.    
ICFR Auditor Attestation Flag true    
Auditor Firm ID 49    
Auditor Name RSM US LLP    
Auditor Location Blue Bell, Pennsylvania