Ref document 566-1454040166 - your reply feb 10th - unfortunately the provided solution is not adequate so we cannot approve the drawings. The hygienic schaft sealings must comply with EHEDG guideline - doc 25. The general design criteria for seals are quote: >>  
- The parts of the seal in contact with product must be suitable for CIP and SIP according to
EHEDG guidelines.
-  The non-product side of the seal shall be cleanable and capable of being disinfected and shall not contaminate or have any adverse influence on the food.
-  Product-contact surfaces have to be smooth and crevice free.
-  The non-product side must be as smooth and as crevice free as possible.
-  Dead ends are not permitted on the product side.
-  Springs are not permitted on the product side.
-  Designed corners must have a minimum radius of 3 mm.
<< end quote
The seal construction at the none driven end is NOT suitable. Also not in case we use purge to prevent soil entering cervices since crevices are not allowed at all.
In general double mechanical seals with water as a barrier liquid are suitable. Special attention to the product side flange has to be taken since a small gap between axle and flange still can accumulate soil. I will upload a sketch, based on the drawing for the bearing issue, to clarify. Please submit detail drawing of this part.