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 6110-00-578-7243
NSN 6130-01-469-5553
NSN 5835-00-998-5757
NSN 5945-00-725-8069
NSN 6650-00-590-9073
NSN 6135-00-967-3112
NSN 6145-01-620-9865
NSN 5945-01-509-3033
NSN 6130-01-519-4042
NSN 5999-01-163-0331
NSN 6150-00-009-9603
NSN 7035-01-600-9607