A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 6145-00-734-4554
NSN 6645-01-261-6903
NSN 6240-01-461-8193
NSN 5950-01-188-5684
NSN 5965-01-406-3156
NSN 5895-01-423-7268
NSN 6130-01-512-8510
NSN 5965-00-594-3115
NSN 6610-00-143-7755
NSN 6135-01-447-4001
NSN 5985-00-182-8122
NSN 6105-01-126-7157