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 5935-00-273-3861
NSN 5930-01-102-5671
NSN 6105-01-387-8016
NSN 5925-01-139-3866
NSN 5965-01-073-9081
NSN 5975-00-985-2748
NSN 5905-01-218-9763
NSN 5835-01-125-2558
NSN 6645-01-369-2478
NSN 6620-01-530-1229
NSN 5960-01-065-9684
NSN 5930-01-386-3068