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 7035-01-332-3496
NSN 6130-00-963-1380
NSN 5935-01-514-7147
NSN 5965-01-132-4018
NSN 5920-01-151-4368
NSN 6105-01-581-4009
NSN 6320-00-261-9136
NSN 5905-00-277-7439
NSN 6610-00-239-4931
NSN 5945-01-068-4471
NSN 5920-01-604-5820
NSN 6150-01-143-2154