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 5985-00-677-9001
NSN 5945-01-514-5594
NSN 6610-01-462-9439
NSN 5895-01-508-9834
NSN 6685-01-259-2596
NSN 5925-01-119-2406
NSN 6240-01-220-4373
NSN 5945-00-457-0005
NSN 5935-01-113-0354
NSN 5935-01-207-5142
NSN 6135-00-334-4500
NSN 6645-00-759-3962