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 5965-01-459-5493
NSN 6610-01-416-2738
NSN 5905-00-329-0769
NSN 2925-01-570-3696
NSN 6645-01-057-5436
NSN 5920-01-289-5197
NSN 6110-01-319-0259
NSN 5990-00-407-4473
NSN 5990-00-241-3780
NSN 5998-00-035-5308
NSN 6145-00-932-1950
NSN 6110-01-605-1590