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 6145-01-361-3122
NSN 5925-01-059-0275
NSN 6650-00-087-6428
NSN 4140-00-253-1801
NSN 5999-01-096-3643
NSN 5910-01-384-6982
NSN 5990-01-198-0114
NSN 5905-01-104-7299
NSN 5996-01-140-6084
NSN 6110-01-113-6968
NSN 6110-00-663-4054
NSN 5999-01-146-2384