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 6145-01-062-6917
NSN 5985-01-495-9662
NSN 6620-01-237-5603
NSN 6650-01-056-2907
NSN 5935-00-949-8716
NSN 5975-01-194-1237
NSN 5998-01-036-7006
NSN 6650-01-029-5414
NSN 6130-01-448-2166
NSN 5996-00-721-2194
NSN 5950-00-614-8709
NSN 5965-01-032-0940