Reference manual no. 37013-250
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 6650-01-222-1749
NSN 6240-01-499-2579
NSN 5945-00-066-8591
NSN 5835-00-148-9719
NSN 5930-00-581-3792
NSN 6130-00-222-6216
NSN 5975-01-248-2083
NSN 5960-01-505-2426
NSN 2925-01-217-0465
NSN 5925-01-078-2374
NSN 6240-01-155-2959
NSN 5910-01-481-3658