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 5855-01-157-7186
NSN 5930-01-331-2829
NSN 5935-01-245-0669
NSN 5910-01-614-5340
NSN 5920-01-142-7554
NSN 5920-01-543-5134
NSN 6135-01-096-1452
NSN 5835-01-529-3050
NSN 5835-01-167-1824
NSN 5965-01-449-1101
NSN 6220-01-521-4841
NSN 6620-01-294-1044