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 6650-00-987-5070
NSN 5935-00-442-5142
NSN 6320-01-089-9086
NSN 6650-01-492-5263
NSN 5930-01-468-5245
NSN 5950-01-290-2671
NSN 6685-01-442-6195
NSN 5998-01-529-6324
NSN 6130-01-502-8823
NSN 6240-01-512-8129
NSN 5990-00-583-9577
NSN 6150-01-357-8428