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 5985-01-096-0406
NSN 6650-01-275-5469
NSN 6240-01-148-4627
NSN 6650-01-318-1829
NSN 5920-01-202-6802
NSN 7035-01-451-3328
NSN 6110-01-615-9705
NSN 5895-01-154-0151
NSN 5998-01-216-9181
NSN 5935-00-185-5560
NSN 4140-01-642-5769
NSN 5930-01-265-1317