Rubber 101

Rubber 101

Endurawear® is Sioux Rubber & Urethane’s proprietary rubber that is specifically engineered to enhance the performance of your machinery, increase equipment life, and keep maintenance costs down. Endurawear® is designed to provide excellent impact and abrasion resistance for plates, pulleys, and liners.

SBR (Styrene-Butadiene Rubber)

The most common type of synthetic rubber in use today. SBR comes in a variety of durometers with around 60 shore “A” being used most often on drive rollers, pulley’s, impact bins/pads and skirt boarding. It has very good impact and abrasion resistant characteristics. A good example is about 50% of all car tires are made from various types of SBR’s.

Natural Rubber

Natural rubber is relatively low-cost lining material for both corrosion and abrasion protection. High resilient, 40-50 durometer, the soft natural rubber exhibits superior abrasion resistant qualities compared to other lining materials. Soft natural rubber offers excellent protection from many corrosive materials. Material is available in red or black if color contamination is a consideration. Typical applications include pump housing, fan systems, lining, and parts tumbling barrels. Constant to intermittent temperature limits are 150 ° to 180 °F.


In addition to chemical resistance and low permeability to gases, Neoprene offers excellent resistance to oils. Constant temperature limit is 200°F. Neoprene is compatible with many chemicals for corrosion protection.


This lining offers excellent resistant to a wide range of corrosive environments over other elastomers. It is also available in a high-temperature compound with 300°F + capability.

Take their

word for it:

It is hard to beat from the aspect of economy, abrasion resistance, lining integrity, and high temperature resistance. [Sioux Rubber] has done an excellent job of installing and testing rubber liners that we have used in our scrubbers and reactors… delivery times are accurate… and the quality of the job is top notch.

Dirk Lohry – Nutra-Flo Chemical Company

What is durometer?

Durometer is one of several measures of the hardness of a material. Hardness may be defined as a material’s resistance to permanent indentation. The durometer scale was defined by Albert F. Shore, who developed a measurement device to measure Shore hardness in the 1920s. The term durometer is often used to refer to the measurement as well as the instrument itself. Durometer is typically used as a measure of hardness in polymers, elastomers, and rubbers.

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Download the Sioux Rubber & Urethane Product Catalog

Are you interested in learning more about how our custom urethane products can extend the life of your equipment? Contact us to speak with a friendly representative and receive a quote. Download our product catalog now to get the complete overview of products and services and learn how your equipment can last longer.

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