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 5925-01-447-3279
NSN 5930-01-386-3068
NSN 5910-00-735-9385
NSN 6145-01-103-3909
NSN 5905-00-600-8138
NSN 5895-01-502-6601
NSN 5935-01-517-4035
NSN 6220-01-487-3904
NSN 5910-01-220-8174
NSN 5915-01-381-5267
NSN 2925-01-323-9835
NSN 5915-01-650-3482