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 6105-00-862-6805
NSN 6105-01-468-8037
NSN 6220-01-364-6950
NSN 6650-00-707-1417
NSN 5835-01-387-4227
NSN 5996-00-942-3110
NSN 6240-01-507-3609
NSN 5855-01-359-8592
NSN 6320-01-512-2031
NSN 5965-00-566-4221
NSN 7035-01-407-6413
NSN 5905-01-223-2833