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 6150-01-093-8297
NSN 6135-01-364-0667
NSN 5975-00-246-2206
NSN 5905-01-621-8483
NSN 5935-01-041-3668
NSN 5965-01-555-8007
NSN 6320-01-364-1840
NSN 5975-00-343-0370
NSN 5915-01-027-0163
NSN 6145-00-135-1436
NSN 6650-01-367-8917
NSN 6150-01-584-0289