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FL1™ Virgin PTFE

Excellent chemical and thermal resistance. FDA-approved. Limited mechanical properties. If improved mechanical properties are required, FL5™ or a filled PTFE should be considered.

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FL2™ PTFE filled with glass fiber/molybdenum disulfide

Due to its unique composition, FL2™ has excellent physical properties and better creep resistance than virgin PTFE. The material also has higher wear resistance than most other PTFE grades containing fillers.

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FL3™ PTFE filled with bronze

FL3™ has good mechanical properties and, compared to FL2™ and FL5™, can withstand higher loads.

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FL4™ Modified PTFE filled with carbon

Good setting properties and durability, good thermal conductivity, and low permeability. Suitable for a wide range of applications.

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FL5™ Modified PTFE

FL5™ has the same chemical properties as virgin PTFE and is also defined as a homopolymer in accordance with ISO 12086. FL5™ has significantly improved mechanical properties compared to virgin PTFE. Seal Engineering AS considers FL5™ to be our standard “virgin PTFE.”

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FL14™ PTFE filled with Ekonol®

FL14™ offers excellent wear resistance. The filler is gentle on metal surfaces, making it a good choice for rotating applications. FL14™ is FDA-approved and is widely used in the food industry.

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FL22™ PTFE filled with carbon and graphite

FL22™ is well-suited for demanding dynamic applications.