Gasket maker, thread sealant or thread locker
Three different jobs that all arrive as a tube of paste. Using one for another is the usual cause of a comeback.
| What it does | Typical use | |
|---|---|---|
| Gasket maker | Forms a gasket in place between two machined faces | Covers, housings, sumps - where no pressed gasket is available |
| Thread sealant | Seals a threaded joint against pressure and leakage | Pipe threads carrying fluid, air or fuel |
| Thread locker | Stops a fastener vibrating loose | Bolts on anything that moves or runs |
Thread locker is graded by strength. A high-strength grade on a bolt you will later need to remove is a bolt you will be drilling out.












