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 7035-00-991-6877
NSN 6110-00-139-3119
NSN 5930-00-943-8047
NSN 5905-01-039-0581
NSN 6645-01-537-3114
NSN 5999-01-634-0576
NSN 5925-00-936-5791
NSN 6105-01-478-0408
NSN 5945-01-211-4935
NSN 5998-00-927-5715
NSN 5835-00-185-4919
NSN 6610-01-219-1656