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 6110-01-174-3741
NSN 6650-01-055-3527
NSN 5950-01-186-2532
NSN 5835-00-454-7239
NSN 6130-01-216-3581
NSN 6130-01-360-4875
NSN 5920-00-246-5992
NSN 5960-01-333-7557
NSN 5935-00-978-2676
NSN 5915-00-597-2369
NSN 5835-01-221-8811
NSN 5895-01-518-6368