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 6685-01-590-6272
NSN 6110-01-138-7447
NSN 5998-01-589-3860
NSN 6150-01-341-7762
NSN 5925-01-293-3838
NSN 6105-01-627-9731
NSN 5996-00-193-3459
NSN 5998-01-354-8463
NSN 6150-01-428-2630
NSN 5910-01-170-3330
NSN 5975-00-830-7638
NSN 4140-01-660-5997