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 6320-00-174-1362
NSN 5996-00-630-9594
NSN 5920-01-336-7568
NSN 6650-01-361-9336
NSN 6610-01-053-6781
NSN 5985-00-011-6303
NSN 6650-01-437-8852
NSN 5915-01-227-5581
NSN 5920-01-535-7477
NSN 5835-00-196-9771
NSN 6150-01-142-2709
NSN 5920-01-560-7308