Permatex® 27150. For securing threaded connections from 10 to 25 mm. Specially designed for use at high temperatures, for use up to 150?C. Replaces conventional locking means such as washers, spring and knurled rings as well as nyloc nuts. Protected thread at the connection site against wear and rust. High security strength red color is fixed. Prevents vibration vibrations, shocks and is resistant to most chemicals. To be used with connections that do not need to be dismantled, such as studs in pump housings and engine blocks. For disassembly, heat or use special tools.