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 6650-00-934-8316
NSN 6110-00-086-9695
NSN 6145-00-846-6165
NSN 6320-00-701-0437
NSN 5985-01-046-2829
NSN 6105-00-069-6009
NSN 5990-00-247-0975
NSN 5920-01-106-1137
NSN 6320-01-436-0513
NSN 5910-00-066-8724
NSN 5925-00-626-4343
NSN 5905-01-090-0792