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 6685-01-381-0759
NSN 6105-01-012-3299
NSN 5996-00-151-4462
NSN 5965-01-419-0476
NSN 5990-01-632-0969
NSN 5910-00-584-6484
NSN 6150-00-558-5508
NSN 5945-01-338-5490
NSN 5835-00-611-0607
NSN 2925-01-054-3190
NSN 6150-00-344-0964
NSN 6130-01-359-2701