Duo Cone seal 1.Diameter 35mm to 1425mm 2.Made of High-alloy Cast Iron 3.HRC 65-70 4. ... Life time 8000 hours Duo Cone Seal for Komatsu, ... Cat, Volvo, Hitachi Duo cone sea Description:Mechanical Face ... under other designations, such as lifetime seals,floating seals,duo cone seals,toric seals and heavy duty seals. ...