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 5855-01-027-1571
NSN 5920-00-108-5399
NSN 5960-00-836-3058
NSN 2925-00-549-6759
NSN 6320-00-445-1187
NSN 5920-00-633-0404
NSN 5895-01-365-1897
NSN 5895-00-815-7905
NSN 6645-01-312-9363
NSN 5950-01-467-2426
NSN 5985-00-081-9142
NSN 5996-00-068-5604