components. In the medical technology, automotive and food industries, silicone rubbers are often used as media carrying components in the form of hoses or profiles. All applications have in common that high demands are placed on the material, as well as on the geometric dimensions, and thus on the manufacturing process.
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The potential of Superior Graphite (RGC39A graphite) in a model lip seal formulation was evaluated for abrasion resistance for a wide range of loads. The abrasion testing was based on the ASTM D3702 test method for wear rate and coefficient of friction (COF) of materials in self-lubricated rubbing contact using a thrust washer testing machine. The role of graphite type on key properties was determined. The evaluations included tensile properties, hardness, Phillips dispersion, abrasion resistance and coefficient of friction. The abrasion and COF test varied the counter surface conditions (dry, wet and oily) and the load (pressure) from 30 to 625 psi.
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The April issue of Rubber World is now available online. This issue focuses on Automotive Elastomers and Parts. Click here
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FEPM type fluoroelastomers are shown to improve the performance of high voltage automotive charging cables.
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Whether it is a requirement for high heat resistance for hybrid-electric vehicles, or sealing of high performance lubricants in battery electric drivetrains, the need for a reliable supply of high performance elastomers like ACM will continue.
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Patent as compiled by the editors of Rubber World for the April issue
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The Canadian Coast Guard is considering the use of EPDM o-rings as a critical component of the water fire extinguishing piping system, with the expectation that they last at least 40 years.
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The March issue is now available online. Issue emphasis is on Custom Mixing & Compounding. Includes Suppliers directory for 2022.
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Due to the long service life of the washing machine, all polymer parts, especially rubber parts, need to have a service life of at least 10 years, which means excellent resistance to aging.
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The following directory lists custom services suppliers. The first part lists custom rubber mixers along with plant locations, equipment, mixing capabilities and whether technical service and/or recipe development are offered. A directory of companies that offer various custom services to the rubber industry follows.
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