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 6130-01-035-0839
NSN 6240-00-912-5186
NSN 5835-01-152-9483
NSN 5855-00-688-9954
NSN 5920-01-384-3387
NSN 5960-01-106-3086
NSN 6145-01-042-2958
NSN 6145-00-844-3777
NSN 5945-00-940-7414
NSN 6105-01-500-0891
NSN 6130-01-321-2650
NSN 6105-01-450-2796