Product Specification

EPDM co-extruded rubber profiles with embedded steel belt or steel wire offer high-performance solutions for applications requiring durability, flexibility, and structural strength. These profiles are widely used in automotive, construction, and industrial applications due to their excellent sealing, resistance to environmental factors, and ability to maintain shape under stress.

Characteristics of EPDM Co-Extrusion Profiles with Steel Reinforcement:

1）Weather and Environmental Resistance:

EPDM provides excellent resistance to ozone, UV radiation, and moisture, making it ideal for outdoor environments.

Suitable for extreme temperatures, typically functioning between -40°C to 120°C, with some formulations extending beyond these limits.

2）Reinforced Structural Strength:

Steel belts or steel wires embedded inside the profile provide added rigidity, preventing deformation and ensuring long-term stability.

Reinforcement improves the dimensional stability under mechanical stress, such as repeated opening/closing movements (e.g., car doors or industrial equipment seals).

3）Multi-Material Design via Co-Extrusion:

Co-extrusion allows different materials with varied hardness levels to be combined in a single profile. This enhances flexibility, durability, and sealing.

Soft EPDM sections: Provide a tight seal, cushioning, and flexibility.

Hard EPDM or rigid plastic parts: Strengthen the profile at specific areas.

Steel reinforcement: Prevents stretching and sagging, ensuring long-term fit and performance.

Benefits of Steel-Reinforced EPDM Profiles:

Enhanced Fixation and Stability:

The steel wire or belt provides a firm grip within installation grooves, reducing the chances of the profile loosening over time.

Useful in dynamic applications, like vehicle door seals, which are subject to frequent movement and vibration.

Improved Sealing Performance:

Maintains consistent pressure against surfaces, ensuring airtight and watertight seals even under deformation.

Prevents dust, noise, and water ingress, enhancing thermal insulation and acoustic performance.

Long Service Life:

Resistant to aging, oxidation, and chemicals, making it suitable for applications requiring minimal maintenance.

Embedded steel ensures the profile retains its shape despite mechanical stress or temperature fluctuations.

Applications of EPDM Co-Extruded Profiles with Steel Reinforcement:

1. Automotive Industry

Door seals: Embedded steel ensures secure attachment and prevents profile distortion over time.

Window channel seals: Offers smooth operation for sliding windows while providing a robust weather seal.

Trunk and hood seals: Prevents water, dust, and noise ingress while withstanding repeated opening/closing cycles.

2. Construction and Building Industry

Window and door seals: Provides a secure seal to prevent air leakage, improving energy efficiency.

Curtain walls and façade systems: Protects against moisture and temperature variations while maintaining structural integrity.

3. Industrial Applications

Seals for heavy machinery: Withstands high mechanical loads and vibrations.

Refrigeration equipment: Maintains airtight seals to ensure proper temperature regulation.

Manufacturing Process for EPDM rubber Profiles:

1）Material Selection and Preparation:

EPDM is blended with fillers and additives to enhance properties like UV and ozone resistance.

Steel wire or belt is prepared to the required length and thickness for embedding.

2）Co-Extrusion Process:

Multiple extrusion heads feed different rubber materials (soft and hard EPDM) into a single die, where they join to form the desired profile.

Steel wire or belt is fed into the extrusion die to embed it inside the rubber material.

3）Vulcanization:

The extruded profile passes through a vulcanization oven, where high temperatures cause cross-linking, giving the EPDM its final elastic properties.

4）Cutting and Inspection:

The profiles are cut to length and inspected to ensure they meet dimensional and quality standards.

EPDM co-extruded rubber profiles with embedded steel wire or steel belts are crucial in applications requiring robust sealing, durability, and dimensional stability. Their ability to maintain performance under extreme environmental conditions and mechanical stress makes them indispensable in automotive, construction, and industrial sectors. As industries demand longer-lasting and higher-performing materials, these profiles continue to evolve, offering better efficiency and reliability.

If your applications require weatherproof rubber trim seals, self adhesive sponge seal strips, co-extruded rubber extrusions, PVC trim seals, silicone rubber tubings, extruded rubber gaskets, “Q” foam window door seals, please feel free contact us. We are committed to supplying our customers with excellent rubber components and outstanding services.