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 6645-01-040-5233
NSN 5999-01-166-4316
NSN 5990-00-301-0144
NSN 5905-00-911-7911
NSN 5960-00-215-5884
NSN 6645-01-317-6071
NSN 6145-01-205-9320
NSN 6645-01-466-9477
NSN 6650-01-632-0802
NSN 6105-01-476-2488
NSN 4140-01-324-6297
NSN 6150-01-535-9224