PPE offers seals for individual biofuel-uses
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Precision Polymer Engineering product story
Edited by the Engineeringtalk editorial team
Jan 20, 2009
Precision Polymer Engineering has developed a range of sealing products for manufacturers, handlers, processors and carriers of biofuels.
Ethanol is a polar solvent and is not compatible with many of the elastomer grades used with gasoline - particularly at high blend ratios.
Problems include excessive swelling and a deterioration of properties.
With biodiesel, conventional sealing materials such as NBR and FKM are prone to damage when exposed to the alcohols and esters and acids present in biofuels and biofuel blends.
To cope with these new fuels, PPE developed polymers that have been incorporated into elastomer formulations designed for the chemistries and temperatures likely to be experienced.
PPE's biofuel-compatible FKM range includes: V75J, which offers excellent chemical and steam resistance; V71C, which has the benefit of low temperature sealing capability to -40C; V74C for biodiesel applications with low compression set; and V76E, which delivers a wide range of other chemical compatibilities.
PPE also offers the Perlast range of FFKM, which has exceptional biofuel, chemical and temperature resistance.
All grades have been successfully tested for a 12-month immersion period.
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