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 5965-00-942-1602
NSN 5960-01-381-2478
NSN 5915-01-033-4921
NSN 6130-00-354-9851
NSN 5985-01-431-4562
NSN 5996-01-606-9454
NSN 5999-01-649-7971
NSN 5945-01-170-4432
NSN 5935-00-950-8208
NSN 5910-00-627-4099
NSN 5925-00-391-5362
NSN 5985-00-155-9417