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 5930-01-371-9425
NSN 6220-01-417-2675
NSN 6685-00-461-1902
NSN 5930-01-398-0656
NSN 5975-01-587-6539
NSN 6105-00-722-3129
NSN 5935-00-222-8599
NSN 5950-01-501-5049
NSN 5935-01-131-4394
NSN 5999-01-421-2692
NSN 5990-01-235-8404
NSN 5920-01-187-6100