Piston seals are essential components for ensuring dynamic sealing within hydraulic and pneumatic cylinders, enabling effective separation of pressure chambers and efficient force transmission. At OSN, we offer a wide range of piston seals designed for industrial, mobile and heavy-duty applications, providing an optimum balance of sealing performance, low friction, wear resistance and long service life.
Our range includes solutions for single-acting and double-acting pistons, standard or severe-duty applications, high-pressure hydraulic systems, mobile equipment, industrial machinery, positioning cylinders, hydraulic accumulators and special applications requiring high performance under pressure, temperature, speed or aggressive-media conditions. The various geometries and material combinations make it possible to select the most suitable solution for each operating environment, optimizing performance and reducing maintenance costs.
Material selection is essential to ensure compatibility with the fluid, working pressure, temperature and service conditions. Our piston seal range can therefore be manufactured from a wide variety of engineering materials to suit the operating conditions of each hydraulic or pneumatic application. The most common compounds include polyurethane (PU), known for its high resistance to wear and extrusion; NBR, FKM and EPDM elastomers, selected according to chemical compatibility and the required temperature range; as well as engineering thermoplastics such as PTFE, POM and PA, used where low friction, high operating speeds or excellent chemical resistance are required.
For more demanding applications, composite material solutions are also used, combining elastomeric elements with support or guide rings made from filled PTFE, reinforced technical fabrics or high-performance polymers. This diversity of materials makes it possible to optimize sealing performance, reduce component wear, extend system service life and ensure reliable operation in sectors such as mobile hydraulics, industrial machinery, lifting equipment, the railway industry, renewable energy, agriculture and other severe operating environments.
Every cylinder and application has specific requirements in terms of pressure, temperature, speed, fluid and available space. OSN’s technical team is therefore available to help you select the most suitable piston seal for your installation, optimizing system reliability, efficiency and service life.
Contact us for technical advice, cross-references, dimensional information or a customized quotation for your project.
