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 2925-00-839-6815
NSN 5965-00-925-1725
NSN 6320-01-462-3555
NSN 5905-01-159-8053
NSN 5950-00-356-2167
NSN 6650-01-085-4084
NSN 2925-01-203-0493
NSN 5945-00-489-5327
NSN 2925-01-233-8545
NSN 4140-00-203-4844
NSN 5965-01-640-8044
NSN 6110-00-190-7523