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 6110-00-944-8607
NSN 5935-01-181-1128
NSN 6135-00-926-8322
NSN 5998-00-391-5986
NSN 5975-01-113-7397
NSN 5996-01-433-7082
NSN 6610-01-555-8364
NSN 5998-01-588-6863
NSN 6130-01-368-9442
NSN 6145-01-432-7481
NSN 5935-01-148-4537
NSN 6110-00-489-8810