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 5945-01-429-7003
NSN 5950-00-657-4769
NSN 5985-00-530-4835
NSN 5935-00-844-4529
NSN 5960-01-602-6009
NSN 5950-00-115-5445
NSN 5996-01-323-6008
NSN 6110-01-077-9604
NSN 6685-00-331-8141
NSN 5960-01-273-4201
NSN 6610-00-500-6944
NSN 5930-01-045-8968