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 5950-01-485-3518
NSN 6320-00-857-4073
NSN 5895-01-016-0552
NSN 5915-00-556-1008
NSN 6645-00-052-3201
NSN 5895-01-508-4051
NSN 5996-01-145-2784
NSN 5855-01-578-6742
NSN 6610-01-418-5787
NSN 5855-00-494-9581
NSN 2925-00-118-4887
NSN 5915-01-468-2069