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 5935-01-190-8915
NSN 5895-01-170-0340
NSN 5895-01-067-7957
NSN 5975-01-572-0507
NSN 5895-00-935-2476
NSN 5905-00-752-7484
NSN 5965-00-932-4591
NSN 5920-01-588-0778
NSN 5895-01-212-9050
NSN 5965-00-578-8931
NSN 6320-00-931-4855
NSN 5855-01-020-7982