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 6240-00-246-5060
NSN 6220-01-368-3119
NSN 6645-00-244-0359
NSN 5920-00-382-8849
NSN 5835-01-568-7796
NSN 5930-00-985-2774
NSN 6130-01-006-3316
NSN 5965-01-453-7504
NSN 6135-00-938-1351
NSN 5895-01-297-1751
NSN 5925-01-555-7565
NSN 5996-00-220-9414