High vertical energy absorption and excellent control of riding.No bonding, unique design with out bonding, only polyurethane based rings in between metal plates hence no chance of bond failure resulting very high service life.High load bearing capacity with high reliability.Reduction in wear of Housing and Bogie Centre Pivot.Simple design easier installation and zero maintenance.Sleeves, Ring and Housing can be independently replaced on damaged.Excellent energy absorption resulting higher hunting thresholds.Consistent performance at wide temperature range and varying weather condition.Highly economical.