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 5965-00-079-0928
NSN 5999-01-537-4690
NSN 5998-00-625-9196
NSN 6150-01-051-0386
NSN 6130-00-727-6909
NSN 6620-01-039-5468
NSN 5835-00-918-8169
NSN 6145-01-160-4627
NSN 5996-00-775-3786
NSN 5945-01-645-9668
NSN 2925-00-923-4397
NSN 5998-00-291-6818