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 5920-01-069-9833
NSN 6240-01-456-3923
NSN 6105-00-531-0563
NSN 6145-01-654-1383
NSN 5895-00-617-6340
NSN 5998-00-492-9675
NSN 5935-00-736-4498
NSN 6110-01-454-6380
NSN 5905-01-330-7747
NSN 5855-00-149-0766
NSN 5996-00-978-0408
NSN 5998-00-463-2265