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 6110-00-996-3698
NSN 5975-01-614-1392
NSN 6130-01-608-3861
NSN 5895-00-912-0126
NSN 5990-01-459-9533
NSN 5998-01-154-4307
NSN 5935-00-326-2240
NSN 5990-01-042-8524
NSN 5920-01-038-3775
NSN 6220-01-466-8260
NSN 5945-00-925-4505
NSN 6685-01-215-7629