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 6135-01-046-6803
NSN 6610-01-256-5485
NSN 5945-01-178-3238
NSN 5950-01-505-7982
NSN 6110-00-429-4777
NSN 6145-01-478-1722
NSN 6620-01-290-2973
NSN 6685-01-223-7564
NSN 7035-01-459-5293
NSN 6685-01-487-5238
NSN 6105-01-037-5823
NSN 5985-00-254-4340