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 6240-00-274-4028
NSN 5950-01-158-5041
NSN 5835-00-406-8460
NSN 5855-00-110-9341
NSN 5985-01-603-4724
NSN 5930-01-526-6344
NSN 5945-00-759-1491
NSN 5945-00-169-7947
NSN 5950-01-386-6481
NSN 6105-01-384-4309
NSN 5965-00-296-5283
NSN 5998-00-671-1242