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 6145-00-937-3536
NSN 6620-00-455-2405
NSN 6240-01-384-3887
NSN 5835-00-092-1136
NSN 6105-01-202-0504
NSN 5950-00-481-8405
NSN 6135-01-223-3869
NSN 5960-01-369-8666
NSN 6150-01-122-7900
NSN 6150-01-279-3101
NSN 5935-00-344-6762
NSN 5996-00-226-5364