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 5935-01-358-3428
NSN 5945-01-514-3467
NSN 6135-01-611-8483
NSN 6135-01-598-9890
NSN 5925-01-259-4736
NSN 6320-00-539-9283
NSN 5835-01-182-1966
NSN 5945-01-435-7148
NSN 5945-01-421-4135
NSN 6130-01-052-7542
NSN 5915-00-514-2098
NSN 5905-01-371-1341