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 5998-01-582-3942
NSN 5930-01-408-1460
NSN 6150-00-243-9531
NSN 6610-00-382-0266
NSN 6650-00-927-3391
NSN 6220-00-133-5170
NSN 5915-01-063-7007
NSN 5935-01-426-8969
NSN 5895-00-189-8095
NSN 4140-01-218-6674
NSN 5945-00-313-6491
NSN 5905-00-519-0582