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 6105-00-728-1001
NSN 5895-01-437-9318
NSN 6145-01-244-9991
NSN 6145-01-283-1262
NSN 5905-00-293-8294
NSN 5895-00-011-1113
NSN 5999-01-523-9663
NSN 6610-01-265-1824
NSN 5996-01-106-8903
NSN 6150-01-143-4899
NSN 5945-01-264-9256
NSN 5925-00-782-0115