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 5935-01-106-2397
NSN 6105-00-038-3957
NSN 5985-01-376-1709
NSN 6145-00-951-9971
NSN 6240-01-449-9815
NSN 6610-01-374-0569
NSN 5915-01-359-4847
NSN 5915-00-418-3849
NSN 7035-01-364-0286
NSN 5990-01-243-4233
NSN 6320-00-174-1362
NSN 5905-01-561-5936