D.I.Ds patented X-Ring construction reduces friction by twisting between the side plates instead of being squashed. Normal O-Rings and other makers modified O-Rings have squashed points that increase friction. The twisting action of the X-Ring disperses the pressure and minimizes power loss.
1.5 to 2 Times Longer Wear Resistance (Compared with normal O-Ring)
The X-Rings four contact points greatly increase its sealing performance. This keeps the dirt out and the lubrication in much better than any other O-Ring. X-Rings have the greatest wear resistance of any other type of O-Ring or Non-O-Ring chain.