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 6240-01-548-8382
NSN 6610-00-654-9877
NSN 6145-01-141-6809
NSN 6685-00-707-4842
NSN 6220-01-020-2550
NSN 6135-00-686-4777
NSN 6240-00-409-5833
NSN 6685-00-118-3625
NSN 5925-01-615-4075
NSN 5930-01-570-2563
NSN 5945-01-109-2894
NSN 5960-01-507-9112