AFT Fluorotec offer high quality PTFE materials by ensuring that we purchase only from European and US sources. Our material is supplied to a standard to meet our data sheet minimum physical property requirements.

The quality of a semi finished PTFE polymer or compound of PTFE (glass, bronze, carbon etc) can be measured relatively easily by utilising  key measurements of their properties:

  • Specific gravity or SG
  • Tensile strength – ie the point at which a test specimen will break under a known load Elongation – the amount the material will “stretch” prior to breaking

Other more complex tests can be performed to but the above represent the key indicator of the quality of the PTFE material. These can also be used to indicate that the material has been correctly processed and sintered.

The physical properties of AFT Fluorotec’s high quality PTFE materials are regularly tested in house, utilising our own equipment.

AFT Fluorotec can also test bond strength and perform peel tests to measure the strength of a PTFE to metal bond for our range of slide bearings.


PTFE (Polytetrafluoroethylene) is a synthetic fluoropolymer of tetrafluoroethylene and is known for being one of the most versatile plastics available.

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