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 5996-01-125-0280
NSN 5950-01-550-0411
NSN 2925-01-187-5480
NSN 5835-00-092-1136
NSN 5910-01-068-2499
NSN 5990-00-103-0528
NSN 5999-01-505-6826
NSN 6130-01-056-8364
NSN 6145-01-475-9052
NSN 5990-00-919-8124
NSN 6130-01-175-3531
NSN 6220-00-944-4512