Polyurethane is the protective barrier for internal steel wires. Minor scratches often result from foreign objects or builder debris trapped near the sheaves during installation.
Foreign objects in the hoistway or on sheaves can "score" the belt as it travels. otis gen2 scratch
If the outer cover begins to peel away (separate) from the inner carcass, complete failure may be imminent. Causes of Abnormal Wear Polyurethane is the protective barrier for internal steel
If a scratch is deep enough to expose the internal steel wires or cords, the belt is compromised and must be replaced. otis gen2 scratch
Oil or chemical spills can soften the polyurethane, making it more prone to physical damage and slipping. Monitoring and Maintenance Solutions