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 5920-01-621-8728
NSN 5905-00-508-0819
NSN 7035-00-283-3112
NSN 5999-01-486-4912
NSN 6145-01-480-8920
NSN 5998-01-074-2461
NSN 5915-01-123-2174
NSN 6145-01-224-6000
NSN 6130-00-519-6192
NSN 6130-01-374-0365
NSN 5960-01-214-4518
NSN 6105-01-344-2439