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 6650-01-276-9723
NSN 6240-01-534-5829
NSN 7035-00-163-6221
NSN 6135-01-317-6021
NSN 5965-01-285-9934
NSN 7035-01-386-5722
NSN 5950-00-767-5290
NSN 5930-01-018-7997
NSN 6220-01-258-5466
NSN 6685-01-265-0634
NSN 5915-00-081-0536
NSN 6650-01-346-5935