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May-Lin Silicone Products, Inc.
PO Box 335 • 955 Wooster Road West Barberton, Ohio 44203
Phone: 330-825-9019 • Fax: 330-825-6153
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Silicone Rubber is a semi-organic synthetic. Its structure consists of a chain of silicone and oxygen atoms rather than carbon and hydrogen atoms, as in the case with other types of rubber. The molecular structure of silicone rubber results in a very flexible, but weak, chain. Silicones are very stable at low and high temperatures. Although fillers may improve properties somewhat, tear and tensile strengths remain relatively low.
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A unique combination of fluid, heat and compression set resistance makes Dupont's Viton one of the toughest, most versatile materials ever developed. It delivers reliable protection against leaks long after ordinary rubber seals have failed.
Seals or other molded products of this fluoelastomer provide reliable protection at elevated temperatures even at 400 degrees F., Viton remains serviceable indefinitely. For comparison, conventional general purpose
elastomers would be brittle after one day.
Viton provides excellent resistance to compression set at high temperatures which accounts for its ability to maintain sealing force and remain tough and elastic even after long exposure to 392 degree F. air or 300 degree F. oil.
Extremely high cost is the chief reason why these elastomers are not used more extensively.
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