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 5930-00-840-8125
NSN 5945-01-352-5114
NSN 5855-01-291-6790
NSN 5998-00-776-0479
NSN 5950-01-454-0992
NSN 6685-01-287-9974
NSN 6650-01-437-0855
NSN 5905-01-419-8786
NSN 7035-00-567-7511
NSN 6130-00-265-1765
NSN 6650-01-459-8703
NSN 5975-00-827-7426