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 5910-01-565-7080
NSN 5835-01-544-5183
NSN 5925-01-123-6802
NSN 5985-00-952-3661
NSN 5975-00-952-1791
NSN 6110-01-519-3813
NSN 6650-00-115-9240
NSN 5925-00-248-2959
NSN 5965-01-036-9945
NSN 6130-01-128-3058
NSN 6650-01-406-5322
NSN 6135-01-529-8523