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 6685-00-997-2719
NSN 5945-01-610-9679
NSN 2925-01-444-2061
NSN 7035-00-731-8729
NSN 6685-01-184-3985
NSN 6240-01-252-4219
NSN 5895-00-370-3418
NSN 5930-00-528-1918
NSN 6150-01-275-0548
NSN 6130-01-323-7444
NSN 5999-01-185-9103
NSN 5985-00-682-6254