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 5945-00-203-5925
NSN 6130-00-801-5359
NSN 5915-01-009-8422
NSN 5960-01-350-2925
NSN 5925-00-812-2651
NSN 5945-01-557-4417
NSN 5996-01-381-3151
NSN 4140-00-964-8623
NSN 5925-00-111-1969
NSN 6105-00-446-6549
NSN 5965-01-024-6137
NSN 7035-00-490-0485