Double Lip Rod Seal - Precision Hydraulic Sealing by Polypac

Double Lip Rod Seal - High-Performance Hydraulic Sealing

Product Overview

The Double Lip Rod Seal is engineered to provide superior sealing on reciprocating rods in hydraulic and pneumatic cylinders. Featuring a primary sealing lip for pressure retention and a secondary lip for contamination exclusion, the Double Lip Rod Seal offers a balanced solution for systems requiring low leakage, reduced friction, and long-term reliability.

Design & Materials

Polypac manufactures Double Lip Rod Seal designs in a wide range of materials, including filled PTFE variants (bronze, carbon, graphite, MoS₂, glass) and elastomers like NBR, FKM, silicone, EPDM, and FFKM. Tailored material selection ensures compatibility with hydraulic fluids, temperatures, and surface speeds for optimal wear resistance and sealing performance.

Performance Benefits

Double Lip Rod Seal construction reduces internal leakage while preventing external contamination. The dual-lip geometry improves pressure distribution, minimizes friction and stick-slip, and extends service intervals—critical advantages for mobile hydraulics, industrial presses, and offshore equipment.

Customization & Manufacturing Capacity

Polypac specializes in customized sealing solutions. Our 10,000+ m² facility, 8,000 m² production space, and advanced equipment support rapid prototyping, custom compounds and tight-tolerance molding. We partner with universities and research institutes to develop seals tailored to extreme or unique working conditions.

Quality Control & Testing

Every Double Lip Rod Seal undergoes rigorous dimensional, material and performance testing. Polypac applies industry-leading inspection and accelerated life testing protocols to ensure consistent sealing performance under pressure, temperature variation and contamination exposure.

Applications & Industries

Ideal for hydraulic cylinders in construction machinery, agriculture, material handling, marine and industrial automation, our Double Lip Rod Seal meets the demands of heavy-duty and precision systems. Custom designs can address special surface finishes, shaft tolerances and fluid chemistries.

Why Choose Polypac

With decades of PTFE expertise and a broad elastomer portfolio, Polypac combines material science, manufacturing scale and R&D collaboration to deliver reliable Double Lip Rod Seal solutions. Contact Polypac for samples, drawings, and engineering support to optimize seal life and system efficiency.