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 5925-01-137-2115
NSN 5920-00-820-4301
NSN 6130-00-159-1104
NSN 5945-01-293-2783
NSN 5930-01-170-0931
NSN 6610-01-365-1896
NSN 5915-01-389-1065
NSN 6110-00-781-4285
NSN 6105-01-172-7306
NSN 5925-01-155-3721
NSN 5965-00-263-1226
NSN 7035-01-534-4459