Plastic Seals as Engineered Sealing Components
Plastic seals are non-metallic sealing and guiding components used in hydraulic, pneumatic, and mechanical systems to support sealing performance, wear resistance, and component alignment.
Unlike elastomer seals, plastic seals are designed to provide structural support, extrusion resistance, wear protection, and dimensional stability under high pressure, dynamic motion, and demanding operating conditions.
KAFLON develops and manufactures engineered plastic seals to meet the performance requirements of hydraulic systems, construction machinery, mining equipment, industrial automation, and medical devices.
Engineering Capabilities
KAFLON plastic seals are engineered to operate in demanding industrial environments where pressure, load, speed, and media compatibility must be carefully balanced.
Precision machining and forming of engineering plastics
Stable dimensional control for dynamic and static sealing
Optimized profiles for wear resistance and load distribution
Compatibility with elastomer and PTFE sealing systems
Materials & Performance Characteristics
KAFLON plastic seals are manufactured from high-performance engineering plastics, selected according to application requirements.
Material selection is optimized based on pressure, speed, temperature, and media compatibility.
Filled PTFE
Enhanced wear, strength, or friction properties for demanding applications
PEEK
High temperature resistance, excellent chemical stability, suitable for extreme operating conditions
Polyoxymethylene (POM / Acetal)
Good dimensional stability, low friction, suitable for precision components
Polyamide (PA / Nylon)
High mechanical strength, excellent wear resistance, widely used in hydraulic and construction equipment
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Typical Plastic Seal Types
KAFLON supplies a wide range of plastic sealing components, including:
- Guide Rings – Support piston and rod alignment
- Wear Rings – Reduce metal-to-metal contact
- Backup Rings – Prevent extrusion of elastomer seals
- Plastic Bearing Rings – Load-bearing and guiding elements
- Custom Plastic Seals – Engineered profiles based on drawings or samples
These components are commonly used in combination with O-rings, U-cups, and PTFE seals.
Applications by Industry-KAFLON plastic seals are widely used in:
Hydraulic & Pneumatic Systems
Cylinders, valves, pumps
High-pressure dynamic sealing systems
Construction & Engineering Machinery
Excavators, loaders, cranes
Heavy-duty cylinders and actuators
Mining Equipment
High-load, abrasive environments
Large hydraulic systems requiring wear-resistant components
Medical & Healthcare Devices
Diagnostic and fluid-handling equipment
Applications requiring clean, stable, and precise plastic components
Industrial Automation
Actuators, linear motion systems
Long-life, low-maintenance sealing solutions
Plastic Seals vs Elastomer Seals (Engineering Perspective)
| Function | Plastic Seals | Elastomer Seals |
|---|---|---|
| Load Bearing | Excellent | Limited |
| Wear Resistance | High | Moderate |
| Elastic Sealing | No | Yes |
| Extrusion Resistance | Excellent | Limited |
| Typical Role | Support & protection | Primary sealing |
Plastic seals are typically used as supporting or protective components, while elastomer seals provide the primary sealing function.
FAQ（Industrial Plastic Seals）
'lt is awesome to work with Creative. amazingy organized,easy to communicate with. responsive with next iterations,and beautiful work.
What are plastic seals used for in hydraulic systems?
Plastic seals are used as guide, wear, and backup components to support sealing performance, prevent extrusion, and improve system durability.
Which industries use plastic seals?
Plastic seals are widely used in hydraulic systems, construction machinery, mining equipment, industrial automation, and medical devices.
Can plastic seals be customized?
Yes. KAFLON offers custom plastic seals based on drawings, samples, or application requirements.
What materials are commonly used?
Common materials include PA, POM, PEEK, and other filled engineering plastics selected for performance requirements.
CTA
Engineered Plastic Sealing Solutions by KAFLON
If your application requires engineered plastic sealing components for hydraulic or industrial systems,
KAFLON’s technical team is available to support material selection, design optimization, and long-term supply.
Find professional plastic seal manufacturers and suppliers in China here. Please feel free to buy customized plastic seal at competitive price from our factory. Quality products and competitive price are available.
F265 POM, F260 PEEK, F270 UHMW PE
