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Polypac PHE Series Seal Kit — Durable Hydraulic & Oil Seals

The Polypac PHE Series Seal Kit delivers dependable hydraulic and oil sealing with premium materials and precise manufacturing. Ideal for industrial and mobile hydraulics, it ensures long life, leak prevention, and easy installation backed by Polypac's testing and support.

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Product Information

PHE Series Seal Kit – Reliable Seal Solutions

The Polypac PHE Series Seal Kit offers a complete, high-quality sealing solution for hydraulic cylinders and oil systems. Manufactured by Polypac, a specialist in sealing materials and custom seal production, the PHE kit combines proven materials and precision manufacturing to reduce leaks, minimize maintenance, and extend equipment life.

Key Features and Benefits

Complete kit: includes all primary sealing elements required for a reliable rebuild.
Durability: made from wear-resistant compounds to withstand pressure, friction, and temperature variations.
Leak prevention: tight tolerances and matched components ensure reliable sealing under dynamic conditions.
Easy installation: designed for straightforward fitment to save time during maintenance.

Materials and Compatibility

Polypac uses a wide range of materials to match different working environments. The PHE Series can include PTFE-based seals (bronze, carbon, graphite, MoS₂, or glass filled) and elastomers such as NBR, FKM, EPDM, silicone, and FFKM. This flexibility ensures compatibility with hydraulic oils, varying temperatures, and specific application needs.

Typical Applications

The PHE Series Seal Kit is ideal for:

Industrial and mobile hydraulic cylinders
Construction and agricultural machinery
Oil-filled rotating equipment and maintenance overhauls

Quality, Testing and Trust

Polypac operates a 10,000+ sqm facility with advanced production and testing equipment. Founded in 2008, Polypac collaborates with universities and research institutes to ensure material performance and reliability. Each PHE kit is produced and inspected under strict quality controls to meet industry expectations.

Ordering and Support

Polypac offers customizable kits and technical support to match special working conditions. For help choosing the right PHE Series Seal Kit, contact Polypac’s technical team for fast guidance and application-specific advice.

Choose the Polypac PHE Series Seal Kit for dependable sealing performance backed by years of material expertise and rigorous testing.

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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 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.

How do I choose the right material for my sealing application?

Material selection depends on four key factors: Media: What fluid or gas will the seal contact? (e.g., petroleum oil, water, chemicals, steam) Temperature: What is the minimum and maximum operating temperature? Pressure: What is the system's operating pressure? Are there pressure spikes? Application: Is it a static, dynamic, or rotary seal? Example: NBR (Buna-N) is excellent for standard hydraulic oil, while FKM (Viton®) is needed for high temperatures or aggressive chemicals.

What is the purpose of the metal spring in a rotary shaft seal?

The garter spring in a shaft seal (e.g., FSKR, SPGO types) provides a constant radial force on the sealing lip. This ensures consistent contact with the rotating shaft, compensating for minor wear, eccentricity, and vibration to prevent lubricant leakage.

If you don’t find your answer, please E-mail us and we’ll be happy to help you out.

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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.

GST-PHE02 Piston Seal | Complete Bidirectional Seal System with Backup Rings

Polypac GST-PHE02 Piston Seal offers a complete bidirectional seal system with backup rings, ensuring reliable performance and durability. Part of the PHE Series Seal Kit, this bidirectional piston seal delivers superior sealing for hydraulic cylinders in demanding applications.

GST-PHE02 Piston Seal | Complete Bidirectional Seal System with Backup Rings