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 of armored fighting vehicles,motorized, whether or not fitted with weapons
NSN 6685-01-191-1539
NSN 6220-01-036-7365
NSN 6650-01-040-9236
NSN 5975-01-493-2332
NSN 6130-01-112-5918
NSN 5915-01-139-5277
NSN 5999-00-900-0992
NSN 5930-01-554-0607
NSN 6105-01-060-2865
NSN 6135-01-268-2152
NSN 5905-01-604-7681
NSN 6320-01-006-6138