Custom EPDM Rubber for Industrial & Automotive Applications

 

 

EPDM rubber is a synthetic elastomer known for excellent resistance to weathering, ozone, UV exposure, water, and temperature extremes. We manufacture custom EPDM extrusions, rubber sheets, gaskets, seals, and molded components for automotive, construction, HVAC, electrical, and industrial applications, with material formulations and profiles engineered to meet specific performance and dimensional requirements.

 

 
 

EPDM Rubber Products

 

EPDM Extrusion

Custom-extruded EPDM profiles are available in different cross-sections, dimensions, hardness levels, and finishing configurations for sealing and weatherproofing applications.
EPDM Strip Roll
EPDM Foam Rubber Strips
EPDM T Rubber Seal For Windows
EPDM Extrusion For Sealing Systems
EPDM Extrusion Rubber Strip
OEM Rubber Sealing Strip
Vehicle Container Sealing Gaskets
EPDM Foamed Composite Sealing Strip

EPDM Rubber Sheets

EPDM rubber sheets provide flat, flexible material for industrial gaskets, waterproofing, insulation, lining, and other sealing applications.
EPDM Rubber Sheet White
EPDM Rubber Sheet Membrane
EPDM Rubber Sheet Gasket
EPDM Rubber Sheet for Roof

OEM ODM Customized Extruded Black EPDM Foam /sponge Rubber Round Cord Rubber Strips factory

 

 

Technical Specifications

 

 

Parameter

Industry Standard / Production Capability

Base Polymer

100% Virgin EPDM (Enichem / Dow Keltan base)

Material Structure

Solid, Microcellular Sponge, Closed-Cell Foam, Co-Extrusion

Hardness Range

Solid: 30–90 Shore A; Sponge: 0.35–0.85 g/cm³ density

Operating Temperature Range

Standard: -40 °C to +120 °C; Peroxide Cured: -50 °C to +150 °C

Dimensional Tolerance

ISO 3302-1: E1 / M1 dimensional tolerance classes

Flame Retardancy

UL94 V-0 / EN 45545-2 compliance available on request

Color Options

Standard Black, White, Grey, or Custom RAL Matching

Surface & Finish

Smooth, Embossed, Low-Friction PTFE Coating, Flock Coating

Adhesive Backing

3M Tape (3M 9448A, 3M 4229P) / Heat-Activated Tape (HATM)

Compliance

RoHS, REACH; FDA 21 CFR 177.2600 for applicable grades

 

 

Selection Guide

 

 

Requirement

Recommended Consideration

Outdoor exposure

Weather- and ozone-resistant EPDM

UV exposure

UV-resistant compound

Water sealing

Solid or sponge EPDM

Lightweight sealing

EPDM foam

Complex cross-section

Custom EPDM extrusion

Flat sealing

EPDM rubber sheet

Fast installation

Adhesive-backed profile

Multiple material zones

Co-extruded profile

Oil / fuel exposure

Consider NBR or FKM

 

 
Manufacturing Process
 
01/

Material Formulation
EPDM compounds can be formulated according to hardness, elasticity, temperature resistance, weather resistance, compression requirements, and application conditions.

02/

Rubber Mixing
Selected polymers, fillers, additives, and curing components are mixed under controlled processing conditions to achieve consistent compound properties.

03/

Precision Extrusion
Extrusion equipment forms the required cross-section while controlling profile dimensions, surface finish, and production consistency.

04/

Continuous Vulcanization
Controlled curing establishes the required hardness, elasticity, tensile properties, and dimensional stability of the extruded profile.

05/

Cutting & Finishing
Profiles can be supplied in continuous rolls or specified lengths. Secondary operations include cutting, punching, adhesive backing, and other finishing processes.

06/

Inspection
Finished products are inspected according to defined specifications, including dimensions, hardness, physical properties, and visual quality.

Customization

Profile Geometry & Structure

Develop custom D, P, T, U-channel, solid, microcellular sponge, or multi-density profiles based on CAD drawings or samples.

Material & Formulation Tuning

Tailor EPDM compounds for specific hardness (Shore A/density), elasticity, compression set, and temperature resistance.

Secondary Processing & Assembly

Provide value-added processing including multi-material co-extrusion, pressure-sensitive adhesive backing (e.g., 3M), and precise cut-to-length services.

Engineering & Prototyping

Offer direct technical support from initial CAD file evaluation to rapid sample prototyping and production scaling.

 

 

EPDM Rubber Applications

 

 

Industry

Typical Applications

EPDM Product Type

Automotive

Door seals, trunk seals, glazing seals, weatherstripping

EPDM Extrusion

Construction

Window seals, expansion joints, roofing membranes

Extrusion / Sheet

HVAC

Duct seals, air handling seals, insulation

Extrusion / Sponge

Electrical

Insulation strips, enclosure seals, cable sealing

Sheet / Extrusion

Industrial

Machine seals, protective profiles, vibration isolation

Sheet / Custom Extrusion

Transportation

Vehicle and container door sealing

Extrusion / Gaskets

 

Technical & Production Capabilities

EPDM Extrusion & Continuous Vulcanization

Our EPDM production facility is equipped with 12 continuous microwave vulcanization (LCM) extrusion lines for stable profile forming and continuous curing. The process supports solid, sponge, foam, and composite EPDM profiles with controlled dimensional consistency.

Precision Tooling & Dimensional Control

In-house tooling capabilities support custom EPDM profile development based on 2D/3D CAD drawings, physical samples, and specified tolerances. Inline laser measurement systems monitor critical profile dimensions during extrusion.

Co-Extruded EPDM Gaskets

EPDM Membrane Sheet

Custom Compound Development

Our engineering team develops EPDM formulations for application-specific requirements, including hardness, compression set, temperature resistance, flame retardancy, and regulatory requirements.

Rapid Prototyping & Production Transfer

Custom extrusion tooling and prototype development can be completed in approximately 5–7 business days for standard profiles, with complex co-extrusion or metal-inserted tooling typically requiring 10–14 business days.

 

 

Why Choose Us

20+ Years of Polymer Engineering Excellence
Since 2002, we have specialized in high-performance polymer solutions for automotive, industrial, electrical, and other demanding applications. Operating a 20,000 m² modern manufacturing facility, we serve 50+ Tier-1 suppliers and global brands with established engineering and quality-control systems.

 

ISO 9001 & IATF 16949 Certified Quality
Certified under ISO 9001 and IATF 16949, with advanced inspection equipment and controlled production processes supporting dimensional accuracy, material consistency, and full batch traceability from raw material to dispatch.
 

Fast-Track OEM & Custom Prototyping
From 2D/3D CAD data to functional prototype samples in as fast as 5–7 business days. Our engineering team supports custom material selection, tooling development, prototyping, and production for NBR, EPDM, FKM, Silicone, PU, and other elastomeric materials.

EPDM Sponge Rubber Seal

 

Packaging & Global Supply

Packaging is selected according to profile geometry, product length, sheet dimensions, weight, and transportation requirements.

Continuous profiles supplied in rolls or specified lengths

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Rubber sheets supplied in rolls, stacks, or specified dimensions

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Protective export packaging

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Custom labels and OEM packaging

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Sea, air, and express transportation

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EXW, FOB, CIF, and DDP options

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VMI support for qualified long-term programs

Applications of EPDM Rubber

 

 

FAQ

 

 

Q: What custom profile tolerances can you achieve for EPDM extrusions?

A: We manufacture according to ISO 3302-1 Class E1 for solid profiles and Class E2 for sponge profiles. Custom laser inline detectors monitor profile dimensions in real time during extrusion to maintain dimensional consistency.

Q: Can you develop custom EPDM formulations for specific environmental requirements?

A: Yes. Our polymer chemists can custom-blend EPDM compounds for specific requirements, including UL94 V-0 flame retardancy, low compression set, and high-temperature resistance up to 150 °C. FDA-compliant formulations are also available for applicable food-contact grades.

Q: What is the typical lead time for custom tooling and prototype samples?

A: Standard extrusion die tooling and prototype sample production typically take 5–7 working days. Complex co-extrusion or metal-inserted tooling generally requires approximately 10–14 working days.

Q: How do you handle custom packaging and cut-to-length requirements?

A: We provide precision cut-to-length services with tolerances down to ±1 mm, along with corner vulcanization and splicing for endless ring gaskets. Pre-applied 3M adhesive backing, custom OEM labeling, and spooling for automated assembly lines are also available.

Q: What is EPDM rubber used for?

A: EPDM rubber is commonly used for automotive seals, window and door seals, HVAC components, roofing membranes, electrical insulation, industrial gaskets, and vehicle or container sealing systems where weather, ozone, water, and temperature resistance are required.

Q: What temperature range can EPDM rubber withstand?

A: Standard EPDM compounds typically operate from approximately -40 °C to +120 °C. Peroxide-cured formulations can support temperatures up to approximately +150 °C, depending on the compound and application conditions.

Q: Is EPDM suitable for outdoor applications?

A: Yes. EPDM is well suited to outdoor applications because of its resistance to UV radiation, ozone, moisture, rain, and weathering. It is commonly used for automotive weatherstripping, window seals, roofing membranes, and outdoor industrial sealing.

Q: Is EPDM resistant to oil and fuel?

A: EPDM generally has limited resistance to petroleum-based oils, fuels, and hydrocarbons. For continuous exposure to these media, NBR or FKM may be more suitable. Material compatibility should be evaluated based on the specific operating conditions.

Q: What is the difference between EPDM extrusion and EPDM sheet?

A: EPDM extrusion is produced as continuous profiles such as strips, tubes, channels, and sealing profiles, while EPDM sheet is a flat rubber material used for gaskets, insulation, lining, flooring, and waterproofing applications.

Q: What information is required for an EPDM rubber quotation?

A: For technical evaluation and quotation, provide the 2D/3D drawing or physical sample, profile dimensions, hardness, material requirements, application environment, required quantity, secondary processing requirements, and target delivery schedule.

We're known as one of the most reliable EPDM rubber manufacturers and suppliers in China. With abundant experience, we warmly welcome you to buy customized EPDM rubber at competitive price from our factory. If you have any enquiry about cooperation, please feel free to email us.

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