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PHE Series Seal Kit — Reliable Hydraulic Sealing Solutions by Polypac

PHE Series Seal Kit — Reliable Hydraulic Sealing Solutions

High Quality Performance for Critical Applications

The PHE Series Seal Kit is engineered to deliver dependable sealing performance in demanding hydraulic systems. Designed by Polypac — an award-winning manufacturer with over a decade of expertise — the PHE Series combines advanced geometries and material science to resist extrusion, wear, and fluid degradation. These kits are ideal for industrial hydraulics, mobile equipment, and specialty systems operating under high pressure and extreme temperatures.

Advanced Materials and Construction

Each PHE Series Seal Kit leverages Polypac’s material development legacy, including filled PTFE variants and elastomers such as NBR, FKM, EPDM, silicone and FFKM. Using bronze-filled, carbon-filled, and MoS₂-filled PTFE compounds, PHE seals provide low friction, high chemical compatibility, and extended service life. The combination of precisely molded elastomer elements and PTFE components ensures consistent sealing contact and rapid break-in performance.

Customizable Solutions and Precision Manufacturing

Polypac’s custom rubber ring and O-ring factory spans over 10,000 m² with state-of-the-art production and testing equipment. The PHE Series Seal Kit can be tailored to specific shaft diameters, groove designs, and material selections to meet unique operating conditions. Close collaboration with universities and research institutions allows Polypac to develop optimized sealing profiles for special working environments.

Quality Assurance and Testing

Stringent quality control underpins every PHE Series Seal Kit. Polypac employs advanced inspection, endurance testing, and compatibility validation to ensure each kit meets international performance standards. This rigorous approach reduces downtime and maintenance costs by improving reliability across service intervals.

Application Versatility and Aftermarket Support

From construction and agriculture to energy and manufacturing, the PHE Series Seal Kit is versatile and easy to install. Polypac provides technical documentation, installation guidance, and aftermarket support to ensure seamless integration. Choose Polypac for a solution-driven partner that delivers durable, high-performance sealing systems.

PHE Series Seal Kit 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.

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.

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 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 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.

Table of Contents

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PHE Series Seal Kit — Reliable Hydraulic Sealing Solutions
High Quality Performance for Critical Applications
Advanced Materials and Construction
Customizable Solutions and Precision Manufacturing
Quality Assurance and Testing
Application Versatility and Aftermarket Support
PHE Series Seal Kit Display

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