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 5835-00-479-0464
NSN 5855-00-586-6255
NSN 5998-01-269-0512
NSN 6150-01-451-5423
NSN 6110-00-116-5514
NSN 6130-01-222-7684
NSN 5945-00-670-0444
NSN 5999-01-485-8058
NSN 6610-01-546-9693
NSN 5930-01-382-8876
NSN 6105-01-224-6438
NSN 6650-00-316-0260