| http://www.w3.org/ns/prov#value | - In many cases, for optimum vulcanizate physical properties, such as tensile strength, it will be desirable to include in the compounding formulation a reinforcing filler such as carbon black, silica, iron oxide, or zinc oxide, e.g. 5 to 60 parts by weight per 100 parts by weight of the fluoropolymer gum.
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