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 6145-01-423-8470
NSN 6645-00-522-4173
NSN 5945-00-823-8652
NSN 6105-01-130-9355
NSN 6620-00-098-5652
NSN 5998-01-378-7006
NSN 6130-01-502-7171
NSN 5835-01-351-8429
NSN 5925-01-605-4824
NSN 6240-00-368-8541
NSN 5915-01-057-6079
NSN 5895-01-061-1115