What are these gear shaped objects?

[Corlooo]

A friend has found a crate of these disks at an old foundry, and has been using them in her artwork. I was told that they used to make furnaces at this foundry- could they be used in those? Others have suggested car parts or saw parts but we have no idea. Thanks!

 

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[bowwinkles]

Used to go over vintage stove pipes to close the gap around the pipe and the hole in the wall.

some examples here: https://duckduckgo.com/?q=vintage+stove+flue+rings&t=h_&iar=images&iax=images&ia=images

 

[Tony in SC]

The rings to hold the pipe inside a flue pipe/chimney pipe?

 

[crashbandicoot]

I believe bowwinkles and tony both got it.I,ve seen those in old farm tenant houses used exactly as they described.

 

[Rmeav8r]

They also give some stand-off of the flue/stove pipe from the wall in case there a fire in the flue....you don?t want a hot pipe scorching or burning the wall!

 

[xaos]

solved....

 

[islamoradamark]

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