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 2925-01-569-3795
NSN 5990-00-165-9195
NSN 5996-00-202-6576
NSN 6620-00-551-9948
NSN 5998-01-532-2131
NSN 5920-01-359-2846
NSN 6220-01-146-4469
NSN 2925-00-474-4990
NSN 6320-01-029-4220
NSN 5935-00-468-4401
NSN 6320-01-084-7456
NSN 5945-01-334-4347