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 6130-01-126-3249
NSN 5950-00-969-3927
NSN 5996-01-034-6238
NSN 6320-01-578-6006
NSN 5910-01-576-7023
NSN 5935-01-238-8114
NSN 5999-00-455-5966
NSN 5935-01-050-9171
NSN 2925-00-798-2663
NSN 5930-00-608-9139
NSN 6620-00-854-5024
NSN 5990-01-544-0364