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 6130-01-168-8507
NSN 6145-01-043-4530
NSN 5945-00-600-5593
NSN 5905-01-471-4176
NSN 2925-00-993-7715
NSN 7035-01-407-6413
NSN 6220-00-284-3220
NSN 5835-01-512-4834
NSN 5910-00-492-4131
NSN 5920-01-584-9617
NSN 5945-00-805-1502
NSN 5999-01-032-4687