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 6105-00-577-8351
NSN 5985-01-525-2668
NSN 6645-01-557-8134
NSN 6650-00-185-8344
NSN 6240-00-398-0740
NSN 6135-01-247-5660
NSN 5915-00-072-8170
NSN 6320-01-459-6992
NSN 5950-00-577-9347
NSN 5935-00-008-1671
NSN 5930-01-190-9685
NSN 5895-00-599-4394