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 6110-01-494-0394
NSN 6130-01-350-7032
NSN 5975-01-327-3588
NSN 5965-00-575-4089
NSN 6240-01-433-0769
NSN 5950-01-361-0465
NSN 5855-01-433-2220
NSN 5950-00-339-2816
NSN 6130-01-516-9693
NSN 5960-00-368-4084
NSN 6150-01-330-7739
NSN 6105-01-058-5716