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 5905-01-448-4308
NSN 6135-01-025-8109
NSN 6150-01-523-5917
NSN 5999-01-315-0979
NSN 5965-01-352-4906
NSN 5998-00-682-2146
NSN 7035-01-123-0085
NSN 5910-00-988-3371
NSN 5945-01-084-6584
NSN 7035-01-381-6185
NSN 2925-01-129-1261
NSN 6150-00-925-5745