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 6650-01-165-2175
NSN 5855-01-199-2046
NSN 6150-01-602-9050
NSN 7035-01-352-0766
NSN 5915-01-607-4773
NSN 5998-01-463-0100
NSN 6685-01-474-6470
NSN 6610-01-070-7034
NSN 5930-01-487-3208
NSN 6145-01-512-8688
NSN 6220-01-648-2184
NSN 5985-00-397-7296