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 6645-00-711-5381
NSN 6135-01-630-3158
NSN 5990-01-116-2181
NSN 7035-00-108-4421
NSN 6135-00-913-2062
NSN 5935-00-997-8639
NSN 5925-01-528-4970
NSN 5996-01-394-3378
NSN 5835-01-580-0446
NSN 5985-01-330-7786
NSN 6105-00-368-0066
NSN 5960-01-495-0859