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 5996-00-432-8578
NSN 5835-01-604-7489
NSN 6685-01-112-3224
NSN 6145-01-425-3373
NSN 6645-01-657-2604
NSN 2925-01-633-4048
NSN 5910-01-616-4889
NSN 5935-00-196-1431
NSN 5998-00-093-6595
NSN 5975-01-634-0678
NSN 5998-01-386-3018
NSN 5950-00-428-3393