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Old 08-23-2021, 01:32 PM   #23
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Join Date: Jun 2017

Rubber, especially of specific hardness and rigidity can break down. Never know how old, (unless coded) and even then rubber is one of those materials that can be from a quirky batch. Thank goodness 99% of products very good. Used to work at tire factory and watch rubber being compounded. Great chemistry and now that there is more synthetic becoming more like plastics with some hit and miss end products.
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