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 6650-00-009-1427
NSN 5996-01-409-1860
NSN 5895-00-097-3571
NSN 6620-01-015-2470
NSN 5895-01-279-7380
NSN 5999-01-377-9771
NSN 6610-01-128-7748
NSN 5905-00-721-1837
NSN 5990-01-642-5748
NSN 5950-00-058-3966
NSN 7035-00-870-0290
NSN 5985-00-951-4469