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 6150-01-152-2650
NSN 5930-01-417-8389
NSN 6685-01-098-6645
NSN 5920-01-033-4891
NSN 6645-01-308-5729
NSN 5910-01-464-7859
NSN 7035-01-507-2590
NSN 5996-01-244-3450
NSN 5930-01-046-1770
NSN 5910-00-809-6581
NSN 5996-00-726-4043
NSN 6320-01-118-6662