| http://www.w3.org/ns/prov#value | - The filler typically includes materials such as zinc oxide, barium sulfate, silica, calcium carbonate, zinc carbonate, regrind and the like. [0033] Other ingredients such as accelerators, e.g. tetra methylthiuram, processing aids, processing oils, plasticizers, dyes and pigments, as well as other additives well known to one of ordinary skill in the art may also be used in the present invention in
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