Replacement Piston Seals — Polypac Precision & Durability

Replacement Piston Seals — Polypac Precision & Durability

Why Choose Polypac Replacement Piston Seals?

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier with a proven track record delivering high-performance replacement piston seals. Founded in 2008, our commitment to innovation and quality ensures you receive seals engineered for longevity, low friction, and reliable sealing under pressure. Whether you need off-the-shelf sizes or tailored designs, Polypac combines industry expertise with commercial value to reduce downtime and total lifecycle costs.

Advanced Materials & Custom Compounds

We manufacture replacement piston seals using advanced materials, including bronze-, carbon-, graphite-, MoS2- and glass-filled PTFE, plus a broad elastomer portfolio—NBR, FKM, silicone, EPDM and FFKM. These options let us optimize hardness, chemical resistance, temperature tolerance and wear characteristics for each application. Our material development capabilities mean custom compounds are available for special media and extreme environments.

Precision Manufacturing & Rigorous Testing

Polypac’s custom rubber ring and O-ring factory spans over 10,000 square meters with 8,000 square meters of production space, and houses industry-leading production and testing equipment. Every batch of replacement piston seals undergoes dimensional inspection, hardness checks, and performance testing to ensure consistent sealing performance. Our close collaboration with universities and research institutions supports continuous improvement and compliance with global standards.

Designed for Harsh Conditions & Wide Applications

Our replacement piston seals are engineered for hydraulic cylinders, mobile equipment, industrial presses, marine actuators and other systems operating under high pressure, abrasive media, fluctuating temperatures and aggressive chemicals. With tailored sealing profiles and material selections, Polypac seals maintain sealing integrity, minimize leakage and extend component life even in the most demanding service conditions.

Customization, Support & Fast Delivery

Polypac specializes in custom sealing solutions: from prototype tooling to full-scale production runs. Technical support is available for material selection, dimensional drawings and installation guidance. As one of China’s largest seal manufacturers, we provide competitive lead times, reliable quality control and global logistics to ensure your replacement piston seals arrive on time and perform as specified.