model-A original spark plug washers

ON the champion 3X spark plugs in the 1930 model-A's, did they use a copper washer or another metal?
 
thanks,
not use to the barn way for doing things yet, but coming. Looking for plain copper washer not asbestus.
Cluck
 
The answer was not asbestos
The copper ring is filled with asbestos
It looks like a fat copper ring with no asbestos showing
 
Thanks for the info. Do you know John Grant, who use to live on :lookout mountain?If you do would you tell him Carleton Luck would like to send him hello. Thanks.-Cluck
 
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