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 6130-01-370-5243
NSN 5985-00-275-9113
NSN 5915-01-597-3926
NSN 5950-01-264-0568
NSN 6130-00-632-9275
NSN 6685-01-323-5272
NSN 5965-00-238-3721
NSN 7035-01-027-1718
NSN 5910-01-593-9114
NSN 5835-01-099-1514
NSN 5935-01-403-2844
NSN 5910-01-362-0722