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 5960-01-061-6216
NSN 6150-01-383-8324
NSN 5835-01-191-3405
NSN 2925-01-295-2017
NSN 5975-00-878-5833
NSN 6320-00-242-3300
NSN 4140-00-420-0251
NSN 5915-01-057-6798
NSN 5835-00-958-6231
NSN 5895-01-222-7259
NSN 5855-01-167-2162
NSN 5985-01-549-8106