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 5905-00-290-8098
NSN 5985-01-024-9268
NSN 6110-00-971-2035
NSN 5915-01-323-5383
NSN 5999-00-518-1007
NSN 6150-01-058-3570
NSN 6685-01-068-9010
NSN 5996-01-556-2999
NSN 5945-01-372-5576
NSN 5990-01-539-3683
NSN 6220-01-246-2284
NSN 5930-00-069-1333