Ultrex® sleeves are high impact plastic sleeves that fit loosely over rollers to enable product accumulation on powered conveyor. The sleeves are not fixed to the rollers, but there is enough friction between rollers and sleeves for products to convey normally. When products are stopped the sleeves stop with the product, preventing product damage, and the rollers continue rotating inside the sleeves. The smooth surface of the Ultrex® slides freely over metal rollers without damaging the sleeve or the roller.Dents in tubing create stress points that can fatigue the material over time. This makes the tube susceptible to permanent deflection where it can become bowed and out of round. Ultrex® sleeves resist denting much better than metal roller tubes. They also distribute impact loads across the length of the tube preventing further deflection and damage. If Ultrex® sleeves are damaged they are much easier and more cost effective to replace than rollers.