... .Life time 8000 hours metal face seal groups for komatsu, cat, volvo, hitachi, caterpillar floating seal Floating seals which is one ... Medium Technical Data for O-Ring:Material: NBRHardness: 60-65 Shore ATemperature range: -20°C to +100°C Advantages:- Simple,reliable ... : http://www.fuyote.com metal face seal groups for komatsu, cat, volvo, hitachi, caterpillar metal face seal groups for komatsu ...