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 5925-01-491-2982
NSN 6105-01-628-1176
NSN 6220-01-390-6357
NSN 5925-00-586-5291
NSN 5999-00-579-6058
NSN 5960-01-101-9029
NSN 5965-00-985-9157
NSN 5945-01-142-4477
NSN 5895-00-288-5878
NSN 5945-00-997-3319
NSN 5925-00-767-0284
NSN 5905-00-825-7303