Piston seals

Piston seals prevent fluid leakage between the piston and cylinder wall in hydraulic and pneumatic systems, ensuring efficient pressure transfer and smooth operation. They are used in automation, heavy machinery, and industrial equipment, reducing friction and extending system lifespan. Made from polyurethane, NBR rubber, PTFE, or elastomer-thermoplastic combinations, they are designed to withstand various working conditions. Their design follows standards such as ISO 5597 for hydraulic seals, ISO 7425-1 and ISO 7425-2 for O-ring-based seals, DIN 3771 for O-ring dimensions, and SAE AS 568 for standardized O-ring sizing. Well-known manufacturers like Hefa, Mädler and SMC, along with other leading manufacturers, offer their 3D CAD models on 3Dfindit, including piston seals.