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 5925-00-882-6676
NSN 5920-01-061-9714
NSN 6650-01-633-9147
NSN 5910-01-415-0273
NSN 6145-00-865-2058
NSN 6130-01-260-1722
NSN 5996-01-478-4937
NSN 5960-01-458-6484
NSN 5935-00-877-2739
NSN 6105-01-555-8479
NSN 6130-00-349-6987
NSN 6130-00-813-2972