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 2925-00-605-8520
NSN 5998-00-364-0828
NSN 6150-00-100-9226
NSN 5960-01-384-4603
NSN 5920-00-246-5992
NSN 5930-01-426-9130
NSN 6105-01-576-9045
NSN 6320-01-429-9871
NSN 7035-00-054-3414
NSN 5910-01-311-6723
NSN 6240-01-410-8958
NSN 5905-01-201-3902