O-Ring Kit U 95301 is made for UBS40, Azimuth Pro and old Azimuth BDK.

But it can be different from very old OMG/Sanosub Azimuth (smaller size attaches for lungs and corrugated hose).

The complete detailed list is:
 
Complete O-Rings kit for UBS40, Azimuth Pro and Azimuth BDK -

part number: U 95301
 

 

    
International Code   N° pieces Distribution
       
OR2081   2 (overpressure valve 2)
       
OR2112   10 (breathing bags 2+2, corrugated hoses 3+3)
       
OR4462   1 (filter 1)
       
OR2031   3 (valve 1, LP hose 1, LP hose for second cylinder 1)
       
OR2056   1 (valve 1)
       
OR108   2 (HP hose 1, HP hose for second cylinder 1)
       
OR2025   4 (LP hoses 3, LP hose for second cylinder 1)