Our EPDM Solid Rubber Profiles are precision-engineered extruded sealing solutions designed to deliver long-lasting performance across automotive, construction, industrial, and outdoor application scenarios. Manufactured under strict quality management systems and fully compliant with QC/T 639-2004 industry standards, these profiles provide reliable protection against water ingress, air leakage, dust intrusion, noise transmission, and temperature fluctuations. Each profile is formed through a microwave vulcanization process that ensures a smooth, blemish-free surface, consistent dimensional accuracy, and stable elastic recovery even after prolonged compression.
These solid rubber profiles are widely used for automotive door and window sealing, building weatherstripping, mechanical gap sealing, and outdoor equipment protection. They maintain consistent sealing performance over decades of service, helping customers reduce maintenance frequency, improve energy efficiency, and extend the service life of their end products.
Material
All our solid rubber profiles are produced from high-grade Ethylene Propylene Diene Monomer (EPDM) synthetic rubber. This material is formulated and tested to meet the full requirements of the QC/T 639-2004 Specification Index for Dense EPDM Rubber, ensuring every batch delivers uniform physical properties and reliable long-term performance. Our EPDM compounds are free from heavy metals and formaldehyde, making them environmentally safe for both indoor and outdoor applications.
Material Features
- Exceptional Weather and Ozone Resistance – The fully saturated main polymer chain of EPDM provides outstanding resistance to ozone, UV radiation, and extreme outdoor conditions. It is widely known as a “non-cracking rubber” for its ability to resist surface cracking even after years of outdoor exposure.
- Wide Operating Temperature Range – Maintains stable elasticity and sealing performance across temperatures from -40°C to +120°C, suitable for use in extremely cold northern regions and high-temperature summer environments. Short-term peak temperature resistance can reach up to 260°C for special application requirements.
- Low Compression Set – Retains excellent elastic recovery after long periods of compression, ensuring consistent sealing force for many years without permanent deformation or leakage issues.
- Superb Physical and Chemical Stability – Resists most polar chemicals, water, and moisture absorption, delivering excellent waterproof performance and strong corrosion resistance against rain, snow, and humid environments.
- Long Service Life – Properly installed EPDM solid rubber profiles can serve for 10–15 years under normal outdoor conditions, with building application lifetimes exceeding 20 years in well-maintained environments.
Specifications
All listed specifications strictly follow QC/T 639-2004 standards for dense EPDM rubber, and every production batch is verified through laboratory testing:
- Tensile Strength: ≥ 7.00 MPa
- Elongation at Break: ≥ 250%
- Hardness Range (Shore A): 60 ± 5, 70 ± 5 ,80 ± 5
- Compression Set (70°C × 22 h): ≤ 35%
- Ozone Resistance (50 pphm, 40°C × 72 h): No visible cracking under 2x magnification
- Heat Aging Performance (100°C × 70 h): Tensile strength change rate ≤ ±20%, elongation change rate ≤ -40%
- Low Temperature Brittleness Temperature: ≤ -40°C, no cracking
- Density Range: 1.30± 0.15 g/cm³
- Environmental Performance: Free of heavy metals, formaldehyde, and harmful volatile substances
Product Linecard
Our EPDM solid rubber profile portfolio covers a wide range of standard and custom shapes to match different application requirements:
| Product Category | Typical Shapes | Common Applications |
|---|---|---|
| D-Seal Profiles | D-shaped solid cross-section | Automotive door frames, cabinet doors, electrical enclosures |
| P-Seal Profiles | P-shaped solid cross-section | Window sash sealing, container door sealing |
| U-Channel Seals | U-shaped solid rubber profile with clamping groove | Metal edge protection, glass edging, panel sealing |
| Rectangular Solid Strips | Square and rectangular cross-sections | Flat gasket sealing, gap filling, anti-collision protection |
| Round Cord Profiles | Continuous round solid rubber cord | Circular gap sealing, pipe flange gaskets, custom cut O-ring replacements |
| Custom Extruded Shapes | Designed to customer drawings and samples | Specialized sealing positions for vehicles, machinery, and construction projects |
| Sponge-Solid Co-Extruded Profiles | Combined dense EPDM sealing lip + soft EPDM sponge base | Enhanced sound insulation and low-closure-force sealing for automotive and building doors |
All profiles can be produced in various colors, surface finishes, and with optional self-adhesive backing, insert metal carriers, or fabric reinforcement according to customer requirements.
Capabilities
We deliver full-spectrum manufacturing and technical support to ensure your EPDM sealing solutions meet exact project requirements:
- Rubber Extruding Expertise – We operate a full range of advanced microwave vulcanization extrusion lines capable of handling complex cross-section designs, tight dimensional tolerances, and high-volume continuous production runs. Our in-house compounding laboratory customizes EPDM formulations to match specific temperature, chemical resistance, hardness, and color requirements.
- Secondary Processing Services – We provide precision cutting to exact lengths, punching, notching, miter cutting, hot splicing into gaskets and frames, surface treatment, and adhesive tape application. This reduces your secondary processing workload and allows you to receive ready-to-install parts directly.
- Custom Development Support – Our engineering team works with you from initial concept, material selection, tooling design, prototype testing, to final mass production. We can turn your 2D drawings or physical samples into qualified EPDM profiles within a short lead time.
- Quality Control System – Every batch undergoes full inspection including dimensional verification, hardness testing, tensile property testing, ozone aging testing, and compression set testing. Full QC documentation and test reports can be provided for each shipment.
- Flexible Packaging & Logistics – We offer customized packaging options including coiled lengths, individual protective bags, export cartons, and palletization to ensure products arrive in perfect condition for global delivery.
Work with Us
Hebei Shida Seal Group has been a trusted manufacturer of EPDM sealing solutions for global partners across automotive, construction, industrial equipment, and renewable energy sectors. Whether you are looking for standard off-the-shelf profiles or fully custom engineered sealing parts, we can provide cost-effective, high-quality products that match your technical specifications and budget.
We welcome OEM and ODM cooperation projects, long-term strategic supply agreements, and joint material development programs. Our technical and sales team will respond to your inquiry within 24 hours, provide professional material recommendations, free drawing review, and competitive quotation support.
To start your project, simply send us your product drawings, sample photos, or detailed performance requirements, and we will create a tailored EPDM solid rubber profile solution for you.
Contact Us
If your applications require Water- and Weather-Resistant Solid Rubber Profiles, EPDM Rubber Seals, EPDM Window and Door Seals, Weatherproof Rubber Trim Seals, Extruded Rubber Gaskets, and Seals, please feel free to contact us. We are committed to supplying our customers with robust rubber components and outstanding services.
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