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 5910-00-469-3696
NSN 6135-00-803-3012
NSN 7035-01-601-1493
NSN 6610-00-180-9062
NSN 5915-00-099-0347
NSN 6645-01-211-6502
NSN 6145-01-551-6645
NSN 6130-01-564-4595
NSN 5950-01-265-6995
NSN 7035-00-919-3381
NSN 5915-01-633-9845
NSN 5965-00-905-7561