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Polypac Hydraulic Rod Seal Kit

High-performance Hydraulic Rod Seal Kit from Polypac — reliable sealing, long wear life, wide temperature and pressure resistance, easy installation and customizable material options for demanding hydraulic systems.

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Product Description

Polypac Hydraulic Rod Seal Kit — Reliable Seal for Demanding Hydraulics

Polypac Hydraulic Rod Seal Kit delivers dependable sealing performance for hydraulic cylinders in construction, agriculture, machining, and industrial equipment. Designed for smooth rod operation and long service life, each kit combines optimized profiles and High Quality materials to prevent leakage, reduce friction, and resist wear.

Key Features

Durable materials: available in NBR, FKM, PU and PTFE-filled options for superior wear and chemical resistance.
Wide temperature & pressure range: stable performance in harsh environments and heavy-duty cycles.
Low friction sealing: improves cylinder efficiency and reduces energy loss.
Easy installation: kit includes seals and backup rings sized for quick replacement.
Strict quality control: factory-tested for dimensional accuracy and sealing performance.

Why Choose Polypac?

Polypac is a scientific and technical seal manufacturer with a modern facility covering over 10,000 m² and advanced production and testing equipment. Since 2008, we have developed filled PTFE seals and a wide range of elastomers. Our long-term partnerships with universities and research institutes ensure continuous improvement and reliable products tailored to special working conditions.

Applications

Ideal for hydraulic cylinders in excavators, loaders, forklifts, presses, and mobile machinery. The kit suits repair shops, OEMs, and maintenance teams that need fast, long-lasting solutions.

Custom Options & Support

Polypac offers custom sizes, compound choices, and kit configurations to match specific rod diameters and working conditions. Our technical team can recommend the best material and profile for abrasion, chemical exposure, or extreme temperatures.

Buy with Confidence

Every Hydraulic Rod Seal Kit is inspected before shipping. Choose Polypac for proven experience, robust materials, and practical sealing solutions that extend equipment life and lower maintenance cost.

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Q&A

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.

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 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.

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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.

GZT Hydraulic Rod Seal Kit for Excavators, Loaders & Construction Machinery

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GZT Hydraulic Rod Seal Kit for Excavators, Loaders & Construction Machinery