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 6150-00-065-0801
NSN 6240-01-291-7500
NSN 6620-01-307-0311
NSN 5935-00-246-5280
NSN 6130-01-480-4081
NSN 5915-00-058-3731
NSN 5999-01-290-3888
NSN 6150-01-308-3222
NSN 6145-00-269-2388
NSN 5996-01-323-5269
NSN 7035-00-541-8516
NSN 6145-00-722-0090