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 5965-00-051-6434
NSN 6220-00-458-4633
NSN 4140-01-564-7429
NSN 5965-00-630-7872
NSN 5960-01-089-8155
NSN 2925-01-279-1558
NSN 5990-00-184-5750
NSN 6645-00-580-9605
NSN 5930-01-508-2202
NSN 6610-01-323-9426
NSN 5945-01-059-4272
NSN 5835-00-327-6192