Permatex High-Temperature Thread Sealant Locks and Protects, 6 mL

This stuff seals threads against fluid leakage, but will not secure fasteners like thread locker. It also does not set up hard like thread locker, but more of a softer gummy-like texture or like moist powder. There is plenty in the tube to do several medium sized fasteners. I used it on Chevy 350 head bolts, which are 7/16" and there are 17 per head and I still had some left in the first tube even after applying it to about 4-5 threads per bolt. The only con I could think of is that you apply this by hand and it can get mildly messy. Nothing any real man minds and nothing a quick wipe of a rag can't fix.

Permatex you failed with this sealer. What a mistake. Applied to all brand new exceptionally clean threads on a new engine, and it simply never cured. I kneaded the tub as directed applied the product, and several weeks later still waiting for it to cure. Still "wet". I have read several others who have experienced this same problem with this crud. I feel sorry for the guy who posted here who used it on his head bolts! I contacted Permatex about this faulty concoction of a poor excuse for a thread sealer. The last thing you need is added stress when assembling an expensive engine, and Permatex has provided that! Never again.