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 5965-00-959-8162
NSN 4140-01-100-0743
NSN 5930-01-155-2519
NSN 4140-00-439-4100
NSN 6220-01-274-0724
NSN 5835-00-198-4936
NSN 5895-01-406-6804
NSN 6110-00-027-3950
NSN 5990-01-285-4633
NSN 6145-01-314-7029
NSN 4140-00-383-5637
NSN 6240-00-160-9223