Seals And Gaskets

WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Always replace seals and gaskets.
After removing seals, inspect the contact surfaces on housings and shafts for burrs and damage and repair if necessary.
Remove any liquid sealant residue completely from sealing surfaces.