Permatex 59235 High Temperature Thread Sealant, 50 ml Tube , White

good product for use on automotive threads. was using this after changing transfer case fluid and differential fluid. always works well and when used properly no leaks!

Works great. Cures way faster when you get it hot.

Use case was to apply sealant to my new rear brake pressure switch for my Harley-Davidson Sportster XL1200C. Applied evenly and this little tube has WAY more (like at least 10X more) than I needed but will be a good addition to the shop. Excellent quality, but note you will have to massage the tube well to get all the fluid to mix easily for a consistent application. Recommended! Don’t settle for less than Permatex. Great value for money and flows evenly.

In my Q.C. lab days, I had a partner who would periodically measure, with a precision optical comparator, tooling for machining threads. He had gauge wires to check the pitch, and go-no go gauges for quick checks. I really wish they used the same exacting standards routinely in Asian manufacturing. I have had more sloppy parts, with off-spec. threads since the East dominated the manufacturing of many commodity fittings. I actually got parts with an apology note enclosed, that said, to use lots of PTFE tape to make a good seal. I ran out of S.W.A.K. anaerobic sealant, which was my usual salvation for loose threads. A new supply of that is very pricey. PTFE tape failed, Hardware store pipe sealant failed. So I tried this. It is a lot like S.W.A.K. sealant. I let it setup for a full four hours. I re-pressurized the system, and thankfully, no leaks. I like the way it goes on as a thick fluid.

Product seems to work fine. However, I purchased the small (6ml) tube and I could barely squeeze out two drops to seal a temp sender. This tube DEFINITELY did not contain 6ml. Otherwise I would have given it 5 stars as I like better than tape.

I have been fighting an air leak for years on my motorcycle. This finally fixed the leak and is still holding a month later. Impressive.

Works well

This durable thread locker is easy to use, dries fast and of top quality. Perfect to use on bolt on the engine.