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 6645-01-137-7974
NSN 6130-00-756-4271
NSN 6110-01-068-3982
NSN 7035-01-249-4547
NSN 6145-00-284-1514
NSN 5950-00-173-4826
NSN 6145-01-259-6439
NSN 6105-01-612-3495
NSN 6240-00-299-9819
NSN 5835-00-187-1481
NSN 5996-01-525-7628
NSN 5930-01-022-4410