Material composition for hydraulic seals varies based on pressure, temperature, speed, and fluid compatibility requirements. Polyurethane offers excellent wear resistance and extrusion resistance at moderate temperatures. Nitrile rubber (NBR) provides cost-effective sealing for petroleum-based fluids. Fluoroelastomers (Viton) withstand high temperatures and aggressive chemicals. Polyt... https://globalsealstech.com/hydraulic-seals/