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Polypac Hose Sealing Solutions

Polypac Hose Sealing Solutions

Overview

Polypac specializes in high-performance Hose sealing components for hydraulic and oil systems. Founded in 2008, we began with filled PTFE seals and have since expanded to custom O-rings and rubber rings in materials such as NBR, FKM, silicone, EPDM and FFKM. Our brand combines scientific R&D with industrial-scale manufacturing to deliver reliable, long-lived seals for critical Hose applications.

Precision Materials & Capabilities

We manufacture Hose seals using advanced filled PTFE (bronze, carbon, graphite, MoS₂, glass) and elastomers tailored to temperature, chemical and pressure demands. Polypac’s custom rubber ring and O-ring factory spans over 10,000 m² with 8,000 m² of production space and industry-leading production and testing equipment to ensure consistent quality across high-volume and bespoke runs.

Custom Hose Seal Solutions

Our engineering team specializes in sealing solutions for special working conditions. Whether you need a Hose seal for high-pressure hydraulic lines, oil transfer couplings, or rotary and dynamic interfaces, Polypac provides design guidance, material selection, prototyping and optimization to maximize service life and minimize leakage.

R&D & Quality Assurance

Polypac maintains long-term collaborations with universities and research institutions at home and abroad. Advanced testing labs and strict quality control ensure every Hose seal meets industry standards. From compound formulation to finished part inspection, we prioritize performance validation under real-world operating cycles.

Applications & Industries

Our Hose seals serve construction machinery, mobile hydraulics, industrial presses, mining equipment, automotive systems and oilfield applications. Polypac’s versatile materials and custom solutions reduce downtime, resist aggressive fluids and maintain sealing integrity across extreme temperatures and pressures.

Why Choose Polypac

Choosing Polypac means partnering with a specialized seal manufacturer that understands Hose system challenges. We offer scalable manufacturing, rapid prototyping, and deep material expertise to deliver cost-effective, durable sealing solutions. Contact Polypac for tailored Hose seal designs that protect performance, extend maintenance intervals, and optimize system reliability.

Hose Display

FAQ:

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.

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.

Table of Contents

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Polypac Hose Sealing Solutions
Overview
Precision Materials & Capabilities
Custom Hose Seal Solutions
R&D & Quality Assurance
Applications & Industries
Why Choose Polypac
Hose Display

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