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 5925-01-535-6212
NSN 6105-00-618-0153
NSN 5950-01-168-8782
NSN 5975-01-291-2373
NSN 6130-00-991-0566
NSN 6610-01-445-6362
NSN 5998-00-137-0469
NSN 6620-00-767-9415
NSN 6610-00-161-0680
NSN 5930-01-354-1471
NSN 6620-01-468-3826
NSN 5965-01-394-1542