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 6320-01-415-0953
NSN 5998-00-388-0259
NSN 5945-00-344-3255
NSN 6135-00-635-6370
NSN 5960-01-481-8051
NSN 6320-01-558-2141
NSN 2925-01-448-2880
NSN 4140-00-067-4798
NSN 6240-00-512-3473
NSN 5835-01-111-9838
NSN 5999-01-285-9206
NSN 5975-00-419-9812