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 6145-00-608-7889
NSN 6110-00-252-2113
NSN 6650-01-444-1229
NSN 7035-01-026-0117
NSN 5960-01-104-7839
NSN 6130-01-634-0603
NSN 6645-01-310-7348
NSN 5945-01-461-7798
NSN 6620-01-488-4681
NSN 6145-00-244-2946
NSN 5925-00-130-2586
NSN 6610-01-614-7191