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 5960-01-386-5770
NSN 5905-00-737-4962
NSN 5965-01-205-3088
NSN 5855-01-364-9810
NSN 6645-01-283-5387
NSN 5855-01-254-4557
NSN 5910-01-440-2228
NSN 6650-01-486-1268
NSN 7035-01-213-5590
NSN 6110-00-904-8925
NSN 6130-00-054-2918
NSN 5990-00-780-7843