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 5999-01-499-8262
NSN 5998-00-878-8877
NSN 6130-00-967-0475
NSN 6105-01-516-5246
NSN 2925-01-370-6898
NSN 5975-01-062-2174
NSN 6650-00-905-9317
NSN 6320-00-456-0836
NSN 6145-00-275-4046
NSN 5915-01-312-1550
NSN 6620-01-081-1042
NSN 5930-00-678-0096