EPDM extrusion rubber strips are continuous profiles manufactured from Ethylene Propylene Diene Monomer (EPDM) through a high-temperature vulcanization extrusion process. These strips deliver consistent cross-sectional geometry, stable physical properties, and long-term environmental resistance across automotive, construction, HVAC, and industrial machinery applications.
What Is EPDM and Why Is It Used for Industrial Sealing?
EPDM (Ethylene Propylene Diene Monomer) is a synthetic elastomer known for its exceptional resistance to weathering, ozone, UV radiation, and broad temperature extremes. The polymer's saturated backbone structure provides inherent stability against environmental degradation - a critical advantage over natural rubber and many other synthetic compounds.
For industrial sealing applications, EPDM offers:
Weather resistance: Unaffected by rain, snow, and UV exposure over decades of service
Thermal stability: Functional from -40°C to +120°C continuously
Ozone resistance: No cracking when exposed to 200 pphm ozone at 40°C for 72 hours per ASTM D1149
Low compression set: Maintains sealing force after prolonged compression per ISO 815-1
Learn more about EPDM extrusion rubber strip
Key Specifications and Weather Resistance Properties
EPDM extrusion rubber strips are manufactured to precise dimensional and physical specifications. The table below outlines typical properties for industrial-grade EPDM profiles:
| Property | Typical Value | Test Standard |
|---|---|---|
| Material | EPDM (Ethylene Propylene Diene Monomer) | - |
| Hardness | 50–80 Shore A (customizable 30–90) | ASTM D2240 |
| Tensile Strength | ≥7.0 MPa | ASTM D412 |
| Elongation at Break | ≥300% | ASTM D412 |
| Compression Set | ≤30% (22h @ 70°C) | ISO 815-1 |
| Continuous Temperature Range | -40°C to +120°C | - |
| Ozone Resistance | No cracking (200 pphm, 40°C, 72h) | ASTM D1149 |
| UV Resistance | Excellent - no cracking, minimal fading | ASTM G154 |
| Density (Solid) | 1.10–1.35 g/cm³ | ASTM D792 |
| Water Absorption | <1% | ASTM D471 |
Material callout per ASTM D2000 M2BA710, A14, B13, C12, F17, P2 is available upon request.
Weather resistance is the defining characteristic of EPDM extrusion rubber strips. The molecular structure contains no double bonds in the polymer backbone, making it highly resistant to ozone attack - a common failure mode for other elastomers in outdoor exposure. UV radiation causes minimal surface degradation, and the material retains flexibility across the full operating temperature range.
Typical Applications in Heavy Machinery and Industrial Equipment
EPDM extrusion rubber strips serve critical functions across heavy machinery and industrial equipment:
Enclosure Sealing: Machine control cabinets, electrical panels, and equipment enclosures require dust-tight and water-resistant seals. EPDM profiles provide ingress protection (IP) ratings up to IP67 when properly designed.
Vibration Damping: EPDM's viscoelastic properties absorb mechanical vibrations, reducing noise transmission and protecting sensitive components from fatigue failure.
Conveyor Systems: Edge seals and guide strips on conveyor systems prevent material spillage and protect bearings from contamination.
Hydraulic and Pneumatic Systems: Static seals in fluid power systems benefit from EPDM's resistance to water-based fluids, steam, and mild chemicals.
Agricultural and Off-Highway Equipment: Exposure to outdoor conditions, dirt, and agricultural chemicals demands the durability that EPDM extrusion rubber strips provide.
Explore industrial black EPDM rubber strip
Customization Options at FLEXMER
FLEXMER (Jinjiang Yunli Technology Co., Ltd.) has manufactured custom EPDM extrusion rubber strips since 2002. Our vertically integrated facility in Jinjiang City, Fujian Province, encompasses:
In-house tooling design and fabrication: Extrusion dies manufactured on-site, reducing lead times and ensuring precision
Custom compound development: Formulations tailored to specific hardness, color, temperature, and chemical resistance requirements
Multiple extrusion lines: Capable of producing solid, sponge, co-extruded, and multi-lip profiles
Dimensional control: Per ISO 3302-1 Class 1, with ±0.10mm tolerance for critical dimensions up to 10mm
Quality management: ISO 9001:2015 certified with full material traceability
Typical lead times: Prototype samples in 7–15 business days; mass production in 2–4 weeks. Tooling costs range from $500 to $2,500 depending on profile complexity.
Frequently Asked Questions
Q: What is the difference between solid EPDM and sponge EPDM extrusion strips?
A: Solid EPDM provides maximum sealing force and abrasion resistance for dynamic applications. Sponge EPDM offers compressibility and insulation properties for applications requiring gap filling and thermal or acoustic barriers.
Q: Can EPDM extrusion rubber strips be produced in colors other than black?
A: Yes. While carbon black is the standard reinforcement for UV and weathering resistance, custom colors are available for applications where aesthetics or color coding is required.
Q: What is the maximum continuous length available for EPDM extrusion strips?
A: EPDM extrusion strips can be produced in continuous lengths up to 100 meters per roll, or cut to specified lengths. Custom packaging configurations are available to suit your production line requirements.
Get Your Custom EPDM Extrusion Rubber Strip Solution
Submit your CAD drawings, cross-section sketches, or technical specifications today. Our engineering team will provide a complimentary material recommendation, tooling quotation, and free factory samples within 48 hours.
Learn more about Jinjiang Yunli Technology Co., Ltd.
Contact FLEXMER Now
Email: sales@flexmer.com
WhatsApp: +86-15959599282
