Audi A New Seal on The Block

Audi A New Seal on The Block

The PTFE seal provides a wider operating temperature and a low coefficient of friction.

Polyurethane, FEP and Nitrile seals don’t always fare well in resisting chemicals and handling engine temperature extremes. But, PTFE oil seals do. PTFE has come a long way over the years and is now the ideal material for critical cylinder head and engine block applications. With a wider operating temperature and a low coefficient of friction, it makes for an excellent shaft seal. 

Because PTFE seals are different than traditional seals, some special application tips are helpful. 

  1. Always install the seal “dry” because a proper seal can’t be achieved if grease or oil is present. 
  2. Keep the sealing surface completely smooth by removing any sharp edges or burrs. 
  3. Install it with a plastic tool (usually supplied) to ensure that the seal lip isn’t compromised. 
  4. Wait at least four hours before operating the motor to ensure proper positioning.

Courtesy of CRP Automotive

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