Fabrics : 

By gluing - or by vulcanization (No gluing, no welding = Part of a single piece as a molded part)

Rubbers : 

Natural (NR), Silicone (SIL), Epdm, Nitrile (NBR), Fkm (Viton), Neoprene (CR), Parablond..

Possible approvals :

Food (Fda, Acs, EC1935/2004) aeronautical, military, railway...

Hardness :  

From 30 ShA to 95 ShA

Colors :

Standards or following RAL

Shapes :

Square, round, rectangular, conical, curved, small radius of curvature possible..

Cuffs dimensions :

From Ø5 mm to Ø2000 mm