English to French Tech/Engineering Engineering (general) Shaft Sealing

Due to a lack of context, I can't seem to get the right translation of the whole paragraph ...

"Shaft Sealing
The rotor of each generator extends beyond the generator casing at both the turbine end (TE) and the collector end (CE). These two shaft to casing interfaces are sealed against hydrogen escape with oil film shaft seals. The shaft seals are located to the inside of the bearings. The shaft seals require a continuous supply of clean cool oil as supplied by the seal oil system."

Looks like it is linked to GDF Suez, or similar.

Tx