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 5905-01-533-3850
NSN 2925-01-307-7429
NSN 5998-01-287-5358
NSN 5910-00-067-6743
NSN 5925-01-098-7829
NSN 6145-01-622-3613
NSN 5950-01-240-5494
NSN 6130-01-437-3529
NSN 5945-01-553-4102
NSN 5935-01-563-6874
NSN 5935-01-256-7452
NSN 5945-00-815-1281