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 5910-00-449-7939
NSN 5905-00-887-6128
NSN 6145-01-442-8143
NSN 5925-01-537-4379
NSN 5910-01-417-5630
NSN 5895-00-258-9135
NSN 2925-01-629-7757
NSN 2925-01-062-2660
NSN 6130-00-754-2950
NSN 6105-00-246-4425
NSN 5945-00-433-3197
NSN 6130-00-957-0150