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 5855-00-797-8217
NSN 5996-01-480-3239
NSN 6240-01-384-8802
NSN 4140-01-649-0939
NSN 5930-01-656-8576
NSN 6150-01-579-4489
NSN 5935-01-564-4190
NSN 6645-01-624-7209
NSN 7035-01-143-3573
NSN 5930-00-870-2043
NSN 5945-00-336-3166
NSN 5920-00-081-5958