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 5935-01-408-7897
NSN 6145-00-263-1855
NSN 6685-01-457-9157
NSN 5960-01-278-9394
NSN 6145-00-840-6685
NSN 6645-01-256-6376
NSN 7035-01-023-7859
NSN 5930-01-438-3226
NSN 6135-01-523-3198
NSN 5965-01-415-3865
NSN 5945-01-555-8373
NSN 6650-01-003-9355