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 5835-00-137-5093
NSN 5990-01-040-6358
NSN 6645-01-324-8185
NSN 7035-01-526-3196
NSN 6620-01-363-8362
NSN 6130-01-088-5756
NSN 6685-00-429-5984
NSN 5835-01-434-0790
NSN 6685-01-539-9248
NSN 5990-01-498-0641
NSN 5915-00-868-2145
NSN 5930-00-928-3238