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 6650-01-113-7563
NSN 5895-01-503-1063
NSN 5935-01-027-0915
NSN 5930-01-521-4163
NSN 5835-01-453-3074
NSN 7035-00-371-7749
NSN 6240-01-547-6444
NSN 6130-00-660-5542
NSN 5910-01-322-4904
NSN 5895-01-246-3665
NSN 5895-01-247-7375
NSN 6240-01-621-2774