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 5975-00-400-2630
NSN 4140-00-606-9453
NSN 5996-01-383-9308
NSN 5915-01-054-0064
NSN 5910-01-357-6484
NSN 5950-01-571-3538
NSN 5920-01-281-7354
NSN 5998-01-430-2594
NSN 5910-00-891-9507
NSN 5930-01-273-9849
NSN 6135-01-516-4638
NSN 5985-00-205-2922