Senqcia Roller Chain
Lubeless Chains (O-ring Chains)
Loss of oil coverage between pins and bushes is one factor controlling the lifespan of chain. O-ring chains are equipped with O-rings to prevent this loss of oil coverage.
Therefore, these chains are suitable for use in situations where it is difficult or impossible to oil the chain, In environments where oiling (lubricant oil) is not tolerated, or in very dusty environment.