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 5975-01-255-1744
NSN 6130-00-465-5366
NSN 5985-01-014-1541
NSN 6645-00-337-8298
NSN 5835-01-442-6482
NSN 6320-01-345-5817
NSN 5920-00-892-2640
NSN 5998-01-495-2040
NSN 6105-01-222-2784
NSN 5965-01-588-5249
NSN 5945-01-086-0860
NSN 5996-01-359-7642