Polypac Rod Seal for Heavy Equipment Cylinders

Polypac rod seals deliver reliable, leak-free performance for heavy equipment cylinders. Durable materials and custom options reduce downtime, extend service life, and ensure stable operation in harsh conditions.
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Product Description

Rod Seal for Heavy Equipment Cylinders

Polypac rod seals are engineered to provide dependable, leak-free sealing for hydraulic cylinders used in construction, mining, agriculture, and other heavy equipment. Designed for long service life and consistent performance, these rod seals reduce maintenance needs and help keep equipment running smoothly in tough environments.

Key Features

- Robust sealing lip that resists extrusion and wear
- Wide material selection including PTFE formulations and elastomers for different working conditions
- Tight tolerances and surface finish compatibility for effective sealing under high pressure
- Available in standard sizes and custom dimensions to fit existing cylinders

Benefits for Your Equipment

Polypac rod seals minimize hydraulic fluid loss and contamination, which directly reduces downtime and operating costs. They keep cylinder rods protected from abrasion and extend the life of both seals and hydraulic components. Easy installation and stable sealing performance ensure predictable maintenance cycles.

Materials and Compatibility

We use advanced materials developed from our long experience with filled PTFE (bronze, carbon, graphite, MoS₂, glass) and elastomers such as NBR, FKM, silicone, EPDM, and FFKM. This allows selection of the best material for temperature, pressure, chemical exposure, and wear conditions, ensuring optimal performance for your application.

Why Choose Polypac

Polypac is a scientific and technical seal manufacturer with a 10,000+ m² facility and advanced production and testing equipment. Since 2008 we have specialized in sealing materials and custom solutions, working closely with universities and research institutes to deliver reliable products. Our expertise means you get rod seals that are tested, durable, and tailored to your needs.

Customization & Support

We offer custom sizes, special materials, and small-to-large production runs. Our team provides technical advice for selecting the right seal and supports you with quality assurance and testing. Contact Polypac for a consultation and get rod seals that improve reliability and reduce lifecycle costs.

Detailed display

  • FSVI-X End Face Spring Seals

Question you may concern

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.
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 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.

If you have another questions, please feel free to contact us.

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Polypac Industrial Technology Co.,Ltd
No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.
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Tags
o ring seals​
o ring seals​
rod seal replacement
rod seal replacement
custom hydraulic rod seals manufacturer
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o-rings for hydraulic systems
o-rings for hydraulic systems
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How Can We Help You?

Whether you need product details, technical support, or a custom solution, we’re here to assist.

Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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How Can We Help You?

Whether you need product details, technical support, or a custom solution, we’re here to assist.

Please enter your name not exceed 100 characters
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Please enter a valid phone number!
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Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

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