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 6645-00-276-1123
NSN 6620-01-082-7326
NSN 6110-01-293-1344
NSN 5996-01-269-4143
NSN 5996-01-656-1558
NSN 7035-00-782-7046
NSN 6320-01-094-2634
NSN 5999-00-368-8428
NSN 5990-01-296-4535
NSN 6685-00-695-7129
NSN 5998-01-321-7613
NSN 5950-00-111-5062