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 5945-01-258-5042
NSN 5910-01-232-8647
NSN 5910-01-212-2562
NSN 6110-00-092-1482
NSN 5935-01-231-2238
NSN 5895-00-892-3916
NSN 5965-01-472-1997
NSN 5920-01-020-7659
NSN 2925-01-633-4048
NSN 5935-00-859-2574
NSN 6110-00-525-3418
NSN 5935-01-263-2000