dbde24e1-4012-47b6-8db4-e89ee4ca5a70 - Polypac

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Polypac Piston Guide Ring for Seals

Polypac piston guide rings deliver low friction, stable guidance and extended service life for hydraulic cylinders. Made from PTFE and advanced filled materials, they’re customizable and backed by Polypac’s expert seal manufacturing.

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Product Information

Product Overview

Polypac piston guide rings for seals are engineered to keep pistons centered, reduce wear, and ensure smooth cylinder operation. Designed for hydraulic and pneumatic systems, these guide rings combine low friction with strong wear resistance to extend component life and reduce maintenance.

Key Features

Low friction surface for smooth piston travel
High wear resistance to extend service intervals
Stable guidance to prevent metal-to-metal contact
Available in PTFE, bronze/carbon/graphite/MoS₂/glass-filled PTFE
Custom sizes and hard/soft material combinations

Why It Matters

A quality guide ring protects seals and cylinders from uneven wear and scuffing. By keeping the piston aligned, Polypac guide rings help maintain sealing performance, reduce downtime, and lower total operating costs. They are ideal for heavy-duty, high-cycle, and aggressive-environment applications.

Materials & Customization

Polypac builds on years of materials expertise. Starting with filled PTFE technologies and expanding into elastomers, we offer guide rings in a wide range of materials to match temperature, chemical and load requirements. Common options include bronze-filled PTFE, carbon-filled PTFE, graphite PTFE, MoS₂-filled PTFE, glass-filled PTFE, and compatible rubber options like NBR, FKM, EPDM and silicone for adjacent components.

Tailored Solutions

Whether you need a standard size or a custom design for special working conditions, Polypac provides fast prototyping, testing and production. Our 10,000+ m² facility and advanced equipment support consistent quality and reliable lead times.

Choose Polypac

Founded in 2008, Polypac combines research partnerships with proven manufacturing to deliver sealing and guiding solutions you can trust. We value your application needs and offer technical support to select the right guide ring—helping your equipment run smoother, longer, and with less maintenance.

Contact Polypac for custom piston guide rings for seals and get optimized performance for your hydraulic systems.

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Question you may concern

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.

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.

What is the difference between a static seal and a dynamic seal?

A Static Seal is used between two surfaces that do not move relative to each other (e.g., pipe flanges, end caps). O-rings and gaskets are common static seals. A Dynamic Seal is used between surfaces that do move (e.g., piston and cylinder, rotating shaft). Rod seals, piston seals, and rotary shaft seals are designed for this purpose.

When should I use a spring-energized seal instead of a standard elastomeric seal?

Consider a spring-energized seal (e.g., GSF, SPN types) for demanding applications involving: Extreme Temperatures (below -30°C or above +200°C) Aggressive Chemicals that elastomers can't handle Very Low Leakage or "Zero Leakage" requirements Poor Lubricity or dry running conditions The internal spring maintains constant sealing force, compensating for wear and system variables.

If you have any other questions, please write email to us or call us , we will reply you ASAP.

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PRODUCTS

dbde24e1-4012-47b6-8db4-e89ee4ca5a70

Polypac Industrial Technology Co.,Ltd

+86 189 2463 6168

rose@dmsseals.com

No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.

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