The oil seal keeps the oil in and dirt out, and is an important sealing part during an overhaul.
A hardened or leaking oil seal allows oil to escape and, in two-stroke engines, false air to enter. New oil seals are standard during an engine overhaul.
This part is suitable for the Aprilia SR50.
Pay attention to the correct dimensions (inside x outside x thickness) and mount with some grease on the lip.
