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 5905-01-105-3010
NSN 6645-01-542-1472
NSN 5990-01-200-6711
NSN 5895-00-264-2047
NSN 5990-00-362-1453
NSN 5895-01-056-1735
NSN 5998-01-062-1900
NSN 5835-01-532-9373
NSN 5975-01-272-8779
NSN 5950-01-114-5104
NSN 6610-01-156-0810
NSN 6145-01-624-5346