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 6150-01-245-3764
NSN 5990-00-269-2226
NSN 5945-00-116-4930
NSN 5990-01-359-8334
NSN 2925-01-090-2391
NSN 6650-00-456-1736
NSN 6105-01-481-4042
NSN 5975-01-014-6161
NSN 5910-01-123-6376
NSN 5965-01-014-3456
NSN 4140-01-158-6976
NSN 6135-00-377-9165