KRO series -
Optimized Road Chain (O-ring)
KRO chain is standard grade of RK road chain with "O-ring" feature made from an advanced Nitrile Butadiene composite for maximum performance and wearlife. All RK O-ring chain is made by high precision assembly technology optimized for grease sealing and friction control. Components are heat treated hi-carbon alloy steel with seamless rollers and shouldered bushings.