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 6150-00-974-9261
NSN 5998-01-243-8314
NSN 5855-01-260-1025
NSN 2925-00-071-4197
NSN 5905-01-437-1480
NSN 6645-00-258-8547
NSN 6320-01-362-9518
NSN 6130-01-377-5922
NSN 5835-00-604-2026
NSN 6240-00-797-3000
NSN 5905-01-431-0933
NSN 6685-01-134-5442