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 5915-00-093-1930
NSN 6145-01-400-1030
NSN 5925-00-597-1558
NSN 6320-01-138-0442
NSN 5915-01-114-5250
NSN 6650-01-542-9495
NSN 5999-01-179-5149
NSN 6220-00-035-6736
NSN 6685-01-596-1091
NSN 5835-01-589-4735
NSN 2925-01-264-5256
NSN 5965-00-705-1690