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Low-friction seals for automotive applications

10 October 2011

A new range of low-friction seals from SKF are claimed lower CO2 emissions and improve fuel economy. Designed to fit rotating engine and transmission shafts, the new seals can reduce levels of friction by up to 55%, compared with conventional shaft seals. The low friction elastomer lip design is based on the wafer technology used for PTFE shaft seals.

The new seals also use a specially formulated FKM material with improved compression set and relaxation properties to compensate for the lack of a spring, normally found in shaft seals. The result is a seal design that provides extremely low friction, outstanding sealing security and long service life.

The seals also provide improved capability on eccentricity and dynamic run-out compared with PTFE seals, as well as good dry-running ability. They provide minimal shaft wear and have excellent dirt exclusion. it is also simple to install because no additional sealants or lubricants are necessary.

Using its Vehicle Environmental Performance Simulator, SKF has calculated the CO2 reduction for a 4-cylinder petrol engine passenger car to be more than on gram per kilometre.


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