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 5915-00-984-0414
NSN 5996-01-433-7082
NSN 6645-00-724-7668
NSN 6110-00-792-9743
NSN 5945-01-324-3749
NSN 7035-00-312-3055
NSN 5996-00-788-6101
NSN 6320-00-937-5625
NSN 6650-01-580-8897
NSN 5930-01-430-0022
NSN 6110-00-004-8883
NSN 5965-01-220-0529