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 6150-00-887-7094
NSN 6650-00-267-0390
NSN 6135-01-469-7574
NSN 6685-00-038-7886
NSN 5910-00-229-1752
NSN 5945-01-088-6526
NSN 5905-01-389-4085
NSN 5965-01-543-9997
NSN 6135-01-317-6021
NSN 6220-00-263-4893
NSN 6145-01-534-2001
NSN 6130-00-082-2633