Pushrod tube seal the first type 50's.

ThisPushrod tube seal is specially designed for the first type 2CV from the 1950s. This product is made out of rubber.

 

An oil leakage common on the Citroën 2CV engine is where the pushrod tubes connect to the crankcase. Here, a rubber seal that looks like a pair of glasses is used; in Dutch, therefore, also called brilrubber.