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 6145-01-564-4932
NSN 5996-00-179-9583
NSN 6220-00-301-2098
NSN 6645-01-082-6389
NSN 6145-01-247-2162
NSN 5930-01-031-6996
NSN 6320-00-583-3105
NSN 6110-01-514-7608
NSN 5895-01-028-5344
NSN 5999-01-507-5389
NSN 4140-01-226-6486
NSN 6135-00-880-1026