In the old days this was used to determine the actual content of natural rubber. Floating does not necessarily indicate that the rubber will perform better or worse in a slurry application. The fact that rubber has a specific gravity less than one is a good indicator that it will float. ![]() Some specifications are valid as a key performance indicators for wear, while others are simply elemental, the physical characteristics.ĪSTM D297 or S pecific gravity is a good example of an elemental specification. I will attempt to simplify and clarify some of the standards and usefulness. ![]() ASTM, NACE as well as others which attempt to define and standardize the industry. ![]() There are many standards used to qualify rubber.
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