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 6130-01-564-1052
NSN 5985-00-849-0055
NSN 6220-00-285-8104
NSN 4140-01-568-6065
NSN 6320-01-098-2503
NSN 7035-01-471-4884
NSN 6150-00-539-6639
NSN 5975-01-622-2423
NSN 5835-00-166-9413
NSN 6145-01-309-0943
NSN 5855-01-233-2767
NSN 6150-01-500-1918