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 5930-00-271-2382
NSN 6110-01-011-4643
NSN 7035-00-931-9415
NSN 5996-01-279-4273
NSN 5965-01-477-0015
NSN 6105-01-062-2256
NSN 6105-00-063-2007
NSN 5999-01-501-8190
NSN 6620-01-089-4416
NSN 6645-01-464-4937
NSN 6645-01-010-3746
NSN 6320-01-578-6006