10 Best Industrial Thread Sealants 2025

When it comes to industrial thread sealants, there's a lot on the market. We've tested and reviewed many different options in the industrial sealants category, with scores ranging from a 7.1 up to an impressive 9.6. After thorough analysis, we've determined that the top pick has to be Refrigeration Technologies. Specifically, their RT201B Nylog Gasket/Thread Sealant is the standout choice. This powerful sealant is perfect for all your industrial needs, and the 30 ml (1 Pack) Blue 30 ml (1 Pack) size provides ample coverage. Don't settle for anything less than the best – check out our top 10 list of industrial thread sealants to learn more about our top pick and the other great products we recommend.