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 6610-01-061-8466
NSN 5905-00-445-3936
NSN 6135-01-528-2830
NSN 5835-00-223-7235
NSN 5960-00-883-5384
NSN 5999-00-360-6520
NSN 6110-01-183-0699
NSN 5990-01-485-0260
NSN 6610-01-633-8931
NSN 6150-01-448-6416
NSN 5996-01-154-9821
NSN 5855-00-427-7848