Dual Lip Seal Design — Polypac Precision Sealing Solutions

Dual Lip Seal Design — Precision Sealing for Hydraulic Systems

Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier focused on producing high-performance seals and tailored sealing solutions. Our Dual Lip Seal Design provides a robust combination of primary pressure containment and secondary environmental exclusion, delivering stable sealing under dynamic loads, high pressures, and contaminated environments. With a manufacturing campus exceeding 10,000 square meters and advanced production and testing equipment, Polypac ensures consistency from prototype to production.

Optimized Dual Lip Geometry for Reliability

The Dual Lip Seal Design uses a primary lip to handle fluid retention and pressure, while a secondary lip blocks contaminants and preserves lubricant films. Optimized geometry and controlled contact pressure reduce leakage and wear, improving energy efficiency and service life. This architecture is ideal for rotating shafts and reciprocating pistons where mixed friction, shaft misalignment, and pressure fluctuations occur.

Materials and Advanced Filled PTFE Options

Polypac began in 2008 with filled PTFE formulations and expanded to offer bronze-filled PTFE, carbon-filled PTFE, graphite PTFE, MoS2-filled PTFE, and glass-filled PTFE. We also supply O-rings and rubber components in NBR, FKM, silicone, EPDM, and FFKM. These material options allow Dual Lip Seal Design optimization for temperature extremes, chemical exposure, and abrasive service conditions.

Customization and Precision Manufacturing

Our custom rubber ring and O-ring factory, with 8,000 square meters of production space, supports rapid tooling, dimensional control, and batch traceability. Polypac collaborates with universities and research institutions to refine seal profiles, lip hardness, and surface finishes—resulting in seals engineered to meet specific system pressures, speeds, and media.

Applications and Performance Benefits

Dual Lip Seal Design from Polypac excels in hydraulic cylinders, pumps, motors, industrial gearboxes, and marine equipment. Benefits include improved leakage control, extended maintenance intervals, lower frictional losses, and superior contaminant exclusion—translating to reduced downtime and lifecycle costs.

Why Choose Polypac

Choose Polypac for award-winning seal design, material science expertise, and scalable manufacturing. We provide testing, certification, and tailored Dual Lip Seal Design solutions to meet demanding working conditions. Contact Polypac to specify a seal that balances performance, durability, and cost-effectiveness.