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 5855-01-359-8592
NSN 5905-01-210-9181
NSN 5895-01-366-3021
NSN 5920-01-273-3144
NSN 5985-00-500-8488
NSN 5920-01-210-7648
NSN 6105-01-430-2346
NSN 6150-00-436-1846
NSN 5965-00-102-4726
NSN 6130-01-534-6253
NSN 5996-01-215-1988
NSN 5996-00-493-3468