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 7035-01-088-6415
NSN 6620-00-270-3275
NSN 4140-00-038-4276
NSN 6645-01-609-7365
NSN 5905-01-033-3496
NSN 5999-01-529-8255
NSN 6610-00-374-1563
NSN 6240-01-303-1003
NSN 5996-00-772-6643
NSN 5925-01-419-6287
NSN 5975-01-091-2045
NSN 5925-01-415-3084