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 6645-01-079-3741
NSN 5930-00-567-3305
NSN 6105-01-555-7874
NSN 6650-01-586-0426
NSN 6220-00-475-0217
NSN 5855-01-340-6541
NSN 6610-00-933-1380
NSN 6610-01-474-4397
NSN 2925-00-157-1602
NSN 5999-01-604-9271
NSN 5998-01-168-3710
NSN 5925-01-091-2756