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 6110-01-286-5512
NSN 6105-00-171-2134
NSN 6685-01-594-9062
NSN 5930-01-406-9415
NSN 5935-01-597-5466
NSN 5910-01-137-4211
NSN 6620-01-397-4131
NSN 5915-00-205-2615
NSN 6110-01-352-1922
NSN 5996-01-398-3516
NSN 6610-00-994-4948
NSN 5835-01-583-0453