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 6645-01-150-9847
NSN 6110-00-643-4832
NSN 5915-01-123-9521
NSN 5996-01-142-9125
NSN 5835-01-411-7050
NSN 6110-01-219-3446
NSN 5905-01-028-1616
NSN 6610-00-406-8544
NSN 5895-01-542-6641
NSN 5960-00-494-4764
NSN 5945-01-504-9722
NSN 5855-01-634-0259