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 7035-01-187-6002
NSN 5925-00-452-1270
NSN 5855-01-201-4857
NSN 6320-00-242-3300
NSN 5935-01-409-2947
NSN 5985-01-474-8295
NSN 6240-01-261-0025
NSN 5855-01-241-1054
NSN 5960-01-512-0233
NSN 6650-00-382-6080
NSN 6610-01-525-8235
NSN 6130-00-528-7838