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 7035-00-902-8995
NSN 6105-01-590-3278
NSN 5965-01-633-8849
NSN 5975-01-137-1798
NSN 2925-00-656-3224
NSN 2925-01-442-4171
NSN 6650-01-424-3947
NSN 6645-01-338-1423
NSN 6105-01-398-1674
NSN 5990-01-370-4785
NSN 6220-01-274-7788
NSN 6240-00-003-6435