What kind of rubbers are this?

says 2023 Certified Organ Donor
says 2023 Certified Organ Donor
Well-Known Member
Sep 2011
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There are a number of rubbers with white sponge around.

Bryce and Aurus come to mind, but since this rubber appears to be shiny, I would be thinking a Chinese rubber. Too many of them in the last 10 years with a white sponge.

My guess is it is a 729 rubber, but there are about another 50 ones out there possible.
 
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