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 5910-01-595-6126
NSN 5950-01-345-6724
NSN 6105-00-564-8798
NSN 5855-00-869-3635
NSN 5910-01-472-2512
NSN 5905-00-236-1367
NSN 6685-00-237-2723
NSN 5999-00-499-8949
NSN 5965-01-393-5833
NSN 5998-01-232-3048
NSN 5999-01-364-3466
NSN 2925-01-199-4001