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 5990-01-206-3606
NSN 5990-01-248-8222
NSN 5935-00-179-0649
NSN 5985-01-483-0511
NSN 6130-00-269-0579
NSN 6685-01-485-2314
NSN 5960-00-861-8369
NSN 5915-01-392-9254
NSN 5950-00-542-3995
NSN 6105-00-349-9743
NSN 5960-00-181-0640
NSN 5960-00-171-9575