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 6105-01-167-8921
NSN 6110-01-224-7502
NSN 6150-01-409-2858
NSN 5895-00-317-2673
NSN 6685-01-575-1159
NSN 5905-01-095-8919
NSN 6150-01-436-8352
NSN 6645-00-134-9358
NSN 5905-01-020-4786
NSN 6620-01-239-9564
NSN 6685-01-170-2578
NSN 7035-01-513-3025