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 5945-01-160-7861
NSN 5985-00-549-9660
NSN 5855-00-174-3482
NSN 5985-01-587-6045
NSN 5950-01-366-9538
NSN 5999-01-425-3971
NSN 5945-01-113-0778
NSN 5960-00-157-5983
NSN 5935-00-339-2783
NSN 5985-01-179-7935
NSN 5910-01-145-0297
NSN 6105-01-568-0763