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 6105-00-389-4632
NSN 5985-01-033-6697
NSN 6110-00-822-4411
NSN 6685-00-889-5103
NSN 5999-01-410-6903
NSN 6220-00-703-5200
NSN 2925-00-915-1827
NSN 5935-01-584-9820
NSN 6110-01-391-6497
NSN 6320-00-790-4844
NSN 5985-01-321-5084
NSN 5965-01-050-8447