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DuPont™ Vespel® SP-2515 …

.. helps boost energy efficiency and extend durability in critical powertrain motion- and fluid-control systems.

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Still not sure? Consider:

Low CTE
Thermal expansion (CTE) that better matches metal for great leak control in seal rings and protection against vibration and seizure in bearings.
» show me    » pdf
Improved Wear
Excellent wear properties that invite use of light-weight aluminum without costly inserts … and protect mating surfaces from contamination particles to help your component run longer. » show me    » pdf
Low Friction
Unique low friction properties that significantly reduce measured torque loss … more than a 50% improvement versus commonly used seal rings. » show me    » pdf