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 6110-00-513-7677
NSN 6150-00-263-3451
NSN 5996-01-181-5438
NSN 6240-00-925-2194
NSN 5915-01-507-3728
NSN 6145-00-155-5297
NSN 5895-00-585-2038
NSN 5895-00-278-5194
NSN 5990-01-253-5011
NSN 6220-01-577-0041
NSN 6130-01-296-9766
NSN 5960-01-414-1677