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 5935-00-269-4811
NSN 6145-00-419-0550
NSN 5935-00-785-5752
NSN 6685-00-942-5061
NSN 5835-01-568-7796
NSN 6650-01-010-4204
NSN 6110-01-025-5517
NSN 6145-01-648-1491
NSN 6645-00-200-2324
NSN 6320-01-308-9392
NSN 5905-01-180-9420
NSN 5910-01-372-5683