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 6645-00-192-1152
NSN 6610-00-070-0011
NSN 5855-01-558-2850
NSN 6685-00-930-9257
NSN 5835-00-830-6416
NSN 6130-01-151-8123
NSN 6145-00-946-2033
NSN 5975-00-762-8051
NSN 5990-00-946-4545
NSN 5835-01-606-8768
NSN 6145-01-654-8793
NSN 6685-01-190-5458