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 6610-00-778-3110
NSN 5935-01-329-4367
NSN 5960-01-040-7114
NSN 6320-00-116-3658
NSN 5930-00-586-5344
NSN 5905-01-461-8937
NSN 5950-01-500-0432
NSN 6645-01-475-4723
NSN 6685-00-737-0795
NSN 6650-01-374-4923
NSN 5950-00-688-3280
NSN 6650-01-058-0049