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 6105-01-487-7484
NSN 5905-01-294-1235
NSN 6110-01-360-4544
NSN 6240-00-944-9729
NSN 6145-01-601-7211
NSN 6620-01-627-0478
NSN 6220-01-044-0708
NSN 6620-01-502-9104
NSN 6220-01-336-0130
NSN 5998-00-051-6657
NSN 5999-01-164-2606
NSN 5915-00-180-1378