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 6145-00-520-1714
NSN 5910-00-293-2389
NSN 6620-00-025-1889
NSN 5910-01-552-6266
NSN 5925-01-397-4991
NSN 6320-00-456-2092
NSN 6610-00-966-5740
NSN 6320-00-139-1090
NSN 6105-01-033-1281
NSN 5999-01-280-3515
NSN 6610-01-339-1595
NSN 5925-00-779-7307