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 6130-01-625-4962
NSN 6320-01-524-9488
NSN 5950-01-588-3406
NSN 5895-01-456-5220
NSN 5999-01-032-4924
NSN 6610-01-032-5335
NSN 6240-01-152-2662
NSN 6220-01-573-8784
NSN 6645-01-463-4314
NSN 5975-01-301-4628
NSN 5998-01-464-9618
NSN 5999-01-528-7492