644-34-192 Rear Axle Oil Seal 2 required per car, Fits 356, 356A, 356B.

For Pre-A thru 356B T-6 -- This oil seal is used in the rear axle in all models with drum brakes. See diagram below, #16. Dimensions are 44,5 x 62 x 10/7. 
You need 2 per car.

Note: This seal is also in our Rear Axle Seal Kit: NLA 34 411