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 6240-01-086-3160
NSN 5990-01-277-9753
NSN 6135-01-187-4382
NSN 5920-01-492-0420
NSN 6240-00-185-8367
NSN 6135-00-938-1351
NSN 6150-00-871-9439
NSN 5935-01-220-5521
NSN 5935-01-288-1856
NSN 5935-00-539-2497
NSN 5999-01-076-7332
NSN 2925-00-824-2186