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 6135-00-166-5984
NSN 5935-01-503-1250
NSN 5960-00-835-1181
NSN 5950-00-727-5277
NSN 6110-01-085-0719
NSN 6130-00-410-2819
NSN 6645-01-411-5657
NSN 6320-01-428-9205
NSN 5920-00-962-9874
NSN 6110-01-427-6395
NSN 5990-00-691-1470
NSN 4140-00-717-6123