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 6610-00-848-4764
NSN 5999-01-597-2415
NSN 5998-00-018-8982
NSN 6150-01-600-2320
NSN 5915-01-100-3729
NSN 6610-01-424-9721
NSN 5835-01-606-8768
NSN 6650-01-467-2355
NSN 5999-01-316-1907
NSN 5998-01-619-4842
NSN 6620-00-856-2353
NSN 6220-01-631-4422