The economic option of the STREET series chains uses a technically simpler ring with a round profile to make the lubricant sealed that imparts its name to the entire sub-category of the chains – O-ring. Despite the use of the O-rings can’t achieve the sealing properties of the Active-rings, the sealing is sufficient for normal operation with adequate lifecycle of the chain transmission. The chains of the O-ring category are selected by the motorcycle users who look for economy of the motorcycle’s operation without high annual mileage.