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 5975-00-910-3461
NSN 5960-00-880-4404
NSN 6130-01-286-3814
NSN 5905-01-588-1936
NSN 6650-00-698-5869
NSN 6135-01-411-3212
NSN 6240-01-356-8144
NSN 5835-00-958-6231
NSN 6145-00-958-5339
NSN 5905-00-260-5008
NSN 5950-00-200-1110
NSN 5998-00-201-8869