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 5965-01-515-6375
NSN 5996-01-038-8474
NSN 5960-01-370-4285
NSN 2925-01-359-4027
NSN 5835-01-575-5053
NSN 5945-00-099-9857
NSN 6610-01-579-9646
NSN 6320-01-261-5983
NSN 6130-01-550-3714
NSN 5950-00-393-1553
NSN 5930-01-267-8518
NSN 5930-00-263-3645