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 5925-01-024-9568
NSN 6130-01-453-1078
NSN 5920-01-010-4855
NSN 5935-01-448-9144
NSN 7035-00-849-5526
NSN 5920-01-119-1896
NSN 5905-00-448-6100
NSN 6150-01-392-4347
NSN 5905-01-297-1713
NSN 5945-00-840-7931
NSN 6145-01-305-8646
NSN 5910-00-542-8125