Biodiesel fuel-oil blends place high demands on engine seal materials


As agricultural and construction manufacturers increasingly accommodate the use of biodiesel fuels in their vehicles, components used to seal engines and transmissions against contamination and leaks must be made of tested, validated elastomeric materials that withstand unique operating conditions or they will prematurely fail.

That's the message Joseph Walker, global director, Advanced Materials Development for Freudenberg-NOK Sealing Technologies (Plymouth, MI), shared with industry leaders attending his presentation at the SAE 2014 Commercial Vehicle Engineering Congress (COMVEC) in Rosemont, IL, October 7. Walker's presentation - and its disconcerting assessment - is based upon an extensive research study by Freudenberg-NOK to study how biodiesel engine oil dilutions impact common sealing elastomers. The study was launched in response to published accounts highlighting concerns associated with diluted oil in heavy machinery.
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