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 5930-01-194-1125
NSN 5935-01-433-2251
NSN 5965-01-198-3256
NSN 5895-01-094-1960
NSN 6650-01-282-8015
NSN 5998-01-188-7555
NSN 5915-01-480-4177
NSN 5930-00-069-5987
NSN 5905-00-277-7439
NSN 5855-01-180-5369
NSN 5945-01-044-4984
NSN 5930-00-276-7600