Density 200kgs Closed Cell EPDM Foam

High Density Closed Cell EPDM Foam for Gaskets and Outdoor Sealing

Topsun high density closed cell EPDM foam is a durable synthetic rubber foam material designed for outdoor sealing, gaskets, weatherstripping, cushioning, vibration damping and industrial protection. Its closed-cell structure helps resist water absorption while supporting air and watertight sealing under suitable compression.

EPDM foam is particularly suitable for outdoor and weather-exposed applications because of its resistance to ageing, sunlight, UV and ozone. It is widely used in construction, automotive, HVAC, machinery, electrical enclosures and other industrial assemblies where long-term environmental resistance is required.

The current technical series includes EPDM foam grades with tested densities of 110 kg/m³, 130±15 kg/m³, 150±15 kg/m³ and 160±15 kg/m³. Topsun can also convert EPDM foam into sheets, rolls, strips, pads, gaskets, adhesive tapes and custom die-cut components.

Closed Cell EPDM Foam Key Features

• Excellent weather resistance: suitable for long-term indoor and outdoor applications.

• UV and ozone resistance: EPDM is well suited to components exposed to sunlight and outdoor atmosphere.

• Closed-cell structure: supports low water absorption and air and watertight sealing under suitable compression.

• Higher-density grades: suitable for gasket, support, cushioning and sealing applications requiring greater compression resistance.

• Thermal insulation: cellular EPDM can help reduce heat transfer in suitable construction, HVAC and equipment applications.

• Vibration damping: flexible foam can help reduce shock and vibration transmission between components.

• Acoustic isolation: suitable for selected equipment, automotive and industrial noise-control assemblies.

• Flexible processing: EPDM foam can be converted into sheets, strips, pads, tapes, gaskets and custom shapes.

• Adhesive options: suitable EPDM foam products can be supplied with adhesive backing for easier assembly.

High Density Closed Cell EPDM Foam Product Information

Closed Cell EPDM Foam Technical Specification

The following table retains the existing technical data for EPDM foam grades 9008, 9010, 9015 and 9016. Final product specifications should be confirmed according to the selected density, hardness, thickness and application requirements.

Referenced EPDM Foam Block Sizes

Closed Cell EPDM Foam Product Video

What Is High Density Closed Cell EPDM Foam?

EPDM stands for Ethylene Propylene Diene Monomer. In foam form, EPDM can be manufactured with a closed-cell structure consisting of individual cells separated from each other by cell walls.

This closed-cell construction helps limit water absorption and allows the material to be compressed between mating surfaces to create flexible sealing components.

Higher-density EPDM foam grades provide greater firmness and compression resistance than softer low-density grades. They can therefore be considered for gaskets, support pads and sealing components where higher compression load is required.

EPDM is particularly valued for its resistance to outdoor weathering, sunlight, UV and ozone, making it suitable for long-term exterior sealing applications.

Why Density Matters for EPDM Foam Gaskets

Foam density influences firmness, compression behavior and the amount of force required to compress a gasket. A higher-density EPDM foam is generally firmer than a lower-density grade and can provide greater resistance under compression.

Density should not be selected independently. The required gasket performance also depends on hardness, thickness, compression space, joint geometry and the pressure applied when the assembly is closed.

The referenced Topsun grades show increasing Shore C hardness and 25% compression load across the higher-density grades, allowing customers to select the foam according to the mechanical requirements of the finished component.

EPDM Foam for Outdoor Weather Sealing

Outdoor sealing components are continuously exposed to sunlight, ozone, temperature changes, humidity and weather. EPDM is commonly selected for these conditions because of its strong resistance to ageing, UV and ozone.

Closed-cell EPDM foam can be used around outdoor panels, doors, access covers, construction joints, electrical enclosures and other assemblies where weather-resistant flexible sealing is required.

EPDM Foam for Air and Watertight Gaskets

Closed-cell EPDM foam has very low water absorption in the referenced grades. Under suitable compression, the foam can form a flexible gasket between mating surfaces and help limit the ingress of air, water and dust.

Final sealing performance depends on foam density, hardness, thickness, compression ratio, gasket width, joint design and surface condition. The material should therefore be selected according to the complete assembly.

EPDM Foam for Construction and Building Seals

EPDM foam can be converted into sealing strips, pads and gaskets for construction components that require long-term weather resistance and flexible compression.

Typical uses include joints, façade components, access panels, doors, windows, roofing-related assemblies and other exterior construction components where exposure to UV, ozone and moisture is expected.

EPDM Foam for Automotive and Transportation Components

Automotive and transportation assemblies require flexible sealing materials that can withstand outdoor weathering, temperature changes and repeated environmental exposure.

Closed-cell EPDM foam can be used for suitable weather seals, pads, gaskets, anti-rattle components, vibration-control parts and equipment interfaces.

EPDM Foam for HVAC and Equipment Sealing

Closed-cell EPDM foam can be used around HVAC equipment, panels, housings and joints where flexible sealing, cushioning and vibration isolation are required.

Custom strips, pads and die-cut gaskets can be manufactured according to equipment geometry, installation gaps and required compression.

Typical Applications of High Density Closed Cell EPDM Foam

High Density vs. Lower Density EPDM Foam

Custom EPDM Foam Gaskets, Strips and Pads

Topsun can convert closed-cell EPDM foam according to customer drawings, samples and finished component dimensions.

How to Select High Density Closed Cell EPDM Foam

• Application: identify whether the foam is required for weather sealing, gasketing, cushioning, HVAC, construction or automotive use.

• Density: specify the required grade or desired firmness and compression behavior.

• Hardness: select according to the closing force and required mechanical support.

• Thickness: select according to the available installation gap and required compression.

• Compression: provide minimum and maximum gap dimensions and available closing force.

• Environmental exposure: specify outdoor weather, UV, ozone, water, temperature and relevant chemical exposure.

• Sealing requirement: identify whether the component needs air, water, dust or weather sealing.

• Adhesive backing: specify whether plain foam or adhesive-backed material is required.

• Finished form: sheet, roll, strip, pad, gasket, tape or custom die-cut part.

• Finished dimensions: provide drawings or samples where available.

• Estimated quantity: provide sample, trial and production requirements where available.

Topsun EPDM Foam Processing Capabilities

Topsun provides foam material supply together with custom processing according to customer dimensions, drawings and finished component requirements.

1. Cutting: foam sheets and rolls can be cut according to required dimensions.

2. Slicing: foam materials can be sliced to the required thickness.

3. Lamination: hot-melt film lamination, flame lamination and pressure-sensitive adhesive lamination are available.

4. Laser Cutting: suitable foam shapes can be processed according to digital drawings.

5. Die Cutting: repeatable EPDM gaskets, pads, strips and custom components can be produced according to customer designs.

6. Compression Molding: three-dimensional molded foam and foam composite components can be manufactured for suitable applications.

7. Engraving: suitable for tool-box inserts, packaging inserts and other customized foam parts.

8. Silk-Screen Printing: logos and patterns can be printed on suitable foam surfaces.

9. Adhesive Backing: adhesive and release liner can be applied to suitable EPDM foam for tapes, strips, pads, gaskets and other converted components.

Other Foam Materials Available from Topsun

Topsun supplies EPDM foam, EVA foam, PE foam, XPE foam, IXPE foam, CR foam, neoprene foam, SBR foam, NBR foam, NBR/PVC foam and micro-cell soft PVC foam in sheet, roll and custom converted forms.

About Topsun Foam

Topsun supplies foam materials and customized foam components for construction, automotive, HVAC, transportation, equipment, packaging and industrial applications. Customers can provide density, hardness, thickness, compression requirements, drawings and application information for product evaluation.

Our facility is located in Changzhou City, Jiangsu Province, China, with convenient access to Shanghai Port for international shipments.

High Density Closed Cell EPDM Foam FAQ

What is closed cell EPDM foam?

Closed cell EPDM foam is a flexible synthetic rubber foam with individual cells that are predominantly separated from each other. This structure helps limit water absorption and makes the foam suitable for weather sealing, gaskets, cushioning and outdoor applications.

What is high density EPDM foam used for?

Higher-density EPDM foam can be used for outdoor gaskets, equipment seals, construction joints, support pads, HVAC components, automotive parts and other applications requiring firmer compression performance.

Is this EPDM foam 200 kg/m³?

The technical data currently shown for this product series includes tested density grades of 110 kg/m³, 130±15 kg/m³, 150±15 kg/m³ and 160±15 kg/m³. If a different density is required, provide the target density for evaluation.

What is the highest density shown in the current technical table?

The highest density grade shown in the current technical table is 160±15 kg/m³.

Is closed cell EPDM foam suitable for outdoor use?

Yes. EPDM is commonly selected for outdoor applications because of its resistance to weathering, UV, ozone and ageing.

Is closed cell EPDM foam waterproof?

The referenced closed-cell grades have very low water absorption and can support water-resistant or watertight sealing under suitable compression. Final sealing performance depends on density, hardness, thickness, compression and joint design.

What is the water absorption rate?

The existing technical data lists water absorption below 0.01% for the referenced grades, with a recorded value of 0.009% for grade 9008.

How does EPDM foam density affect gasket performance?

Higher-density foam is generally firmer and requires greater force to compress. Lower-density foam is generally softer and easier to compress. The correct density depends on the available closing force, gap size and required sealing performance.

Is EPDM foam resistant to ozone?

EPDM is well known for ozone resistance. The existing technical table records no cracking in the ozone ageing test for the referenced 9010, 9015 and 9016 grades.

Can EPDM foam be used for automotive gaskets?

Yes. Closed-cell EPDM foam can be used for suitable automotive weather seals, gaskets, pads and vibration-control components where EPDM properties match the service environment.

Can EPDM foam be used for electrical enclosures?

Closed-cell EPDM foam can be considered for outdoor electrical enclosure gaskets because of its weather, UV and ozone resistance and its ability to form flexible seals under suitable compression.

Can Topsun make custom EPDM foam gaskets?

Yes. Topsun provides cutting and die-cutting capabilities for suitable EPDM foam materials. Custom gaskets, strips, pads and other shapes can be evaluated according to drawings or samples.

Can adhesive backing be added to EPDM foam?

Yes. Adhesive backing can be applied to suitable EPDM foam products for easier positioning during assembly. The bonding substrate and service conditions should be provided when selecting the adhesive construction.

What information should I provide for EPDM foam selection?

Please provide the application, required density or firmness, thickness, gap dimensions, compression requirement, environmental exposure, sealing requirement, adhesive option, finished dimensions and estimated quantity.

How can I request an EPDM foam sample?

Send your requirements to july@topsunfoam.com, including density, hardness if known, thickness, finished dimensions, application and estimated quantity for evaluation.