Cylinder Guide Ring Solutions by Polypac

Cylinder Guide Ring Solutions — Polypac

Precision Guide Rings for Hydraulic Cylinders

Polypac Cylinder Guide Ring products are engineered to control piston alignment, reduce wear, and extend cylinder life. Manufactured with industry-leading materials such as bronze-filled PTFE, carbon-filled PTFE and MoS₂-filled PTFE, our guide rings deliver low friction, excellent dimensional stability, and long service intervals in both mobile and industrial hydraulics.

Custom Materials and Configurations

We specialize in bespoke guide ring designs to suit special working conditions. From glass-filled PTFE compounds to tailored elastomer-backed constructions, Polypac adapts material hardness, tolerances, and profiles to match media, temperature, and load requirements. Cylinder Guide Ring options are available as single-piece, split, or bonded assemblies for easy installation and superior sealing support.

Manufacturing Capacity and Quality Control

Polypac’s factory spans over 10,000 m² with 8,000 m² of production space and advanced testing equipment. Every Cylinder Guide Ring undergoes dimensional inspection, material verification, and performance testing to ensure consistent quality. Our processes meet demanding tolerances and are backed by long-term development partnerships with universities and research institutes.

Heritage in PTFE and Expanded Seal Range

Since 2008 we began with filled PTFE seal technology and have expanded to a full range of sealing solutions. Today our portfolio includes NBR, FKM, silicone, EPDM and FFKM O-rings plus specialty Cylinder Guide Rings. This breadth lets Polypac provide matched seal systems—guide ring, rod seal, and O-ring combinations—for reliable hydraulic performance.

Applications and Benefits

Polypac Cylinder Guide Rings are ideal for construction machinery, agricultural equipment, presses, and marine hydraulics. Benefits include reduced metal-to-metal contact, improved piston guidance, prolonged seal life, and easier maintenance. Custom designs help reduce downtime and total cost of ownership.

Why Choose Polypac

Choose Polypac for proven Cylinder Guide Ring expertise, fast prototyping, and scalable production. Our scientific approach to sealing material development and customer-focused customization ensures your cylinders perform precisely where it matters. Contact Polypac for samples, datasheets, and design support.

Cylinder Guide Ring Display

FAQ:
Can I reuse a seal?

We strongly recommend never reusing seals. Once compressed and used, a seal takes a "set" and its elastic properties are degraded. Reusing it almost always results in a leak. Always install a new seal during any maintenance or repair.

What is the difference between NBR and FKM materials?

NBR (Nitrile/Buna-N): A general-purpose, cost-effective material with excellent resistance to petroleum-based oils and fuels. It has a standard temperature range of -30°C to +100°C (-22°F to +212°F). FKM (Fluoroelastomer/Viton®): A premium material with excellent resistance to high temperatures (up to 200°C+), chemicals, and oils. It is used in more severe environments but is more expensive than NBR.

What does "AS568" mean?

AS568 is the Aerospace Standard that defines the dimensions for over 360 standard O-ring sizes. It is the most widely accepted sizing system in North America and globally. An AS568 number (e.g., AS568-214) specifies a precise inside diameter and cross-section.

How can I prevent seal damage during installation?

Use Tools: Always use dedicated installation tools (e.g., picks, cones, guides). Lubricate: Always lubricate the seal and the contact surface. Protect Sharp Edges: Cover sharp threads and edges with tape or use an installation sleeve. Check the Groove: Ensure the installation groove is clean, deburred, and undamaged.

How important is surface finish on the metal parts that contact the seal?

Extremely important. A rough surface will abrade and wear out the seal quickly, causing leaks. A finish that is too smooth can prevent a lubricating film from forming. A typical recommended surface finish for dynamic applications is 0.2 to 0.8 μm (8-32 μin) Ra.

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