Reference manual no. 37013-250
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 5920-00-817-3387
NSN 6240-01-312-6281
NSN 6620-01-461-3550
NSN 6130-01-649-1562
NSN 5945-01-443-3423
NSN 6240-00-405-4847
NSN 5910-01-535-4886
NSN 6320-00-405-2348
NSN 5945-01-365-0459
NSN 5935-01-193-2141
NSN 6130-01-262-9949
NSN 4140-00-432-0456