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 6130-01-585-4493
NSN 5905-00-813-9736
NSN 6135-01-562-3056
NSN 4140-00-895-9624
NSN 5915-00-528-9286
NSN 6130-00-186-8460
NSN 6135-00-170-8819
NSN 6620-01-598-1550
NSN 5905-01-165-0668
NSN 7035-01-227-2546
NSN 5855-01-328-7434
NSN 5999-01-263-1895