TDS - E3035 EPDM Foam Pad

1. Product Description

E3035 is a closed-cell EPDM (Ethylene Propylene Diene Monomer) foam pad engineered for thermal insulation and mechanical cushioning in energy storage systems (ESS) and battery pack assemblies. Its uniform closed-cell structure provides excellent compression resilience, low water absorption, and outstanding flame retardancy. The material maintains stable mechanical and thermal properties across a wide operating temperature range, making it well-suited for demanding battery module environments. Standard sheet size: 1000mm × 2000mm; custom thickness and die-cut shapes available.

2. Key Features

Closed-cell structure — low water absorption (<5%)

Flame retardant — ≤100 mm/min (GB8410, T≥6mm)

High tensile strength (>800 kPa)

Excellent elongation at break (>160%)

Good thermal insulation — 0.06±0.02 W/(m·K)

High temperature dimensional stability (<5% shrinkage at 70°C)

Compatible with battery pack assembly processes

Custom thickness and die-cut shapes available

3. Technical Data

Item	Unit	Spec / Value	Test Method
Color	—	Black	Visual Inspection
Standard Size	mm	1000 × 2000	—
Hardness	Shore C	30 ± 5	JIS K6767
Density	kg/m³	220 ± 30	ASTM D3574
Tensile Strength	kPa	> 800	ASTM D412
Elongation at Break	%	> 160	ASTM D412
Tearing Strength	kN/m	> 4.0	ASTM D624
Compressive Strength (25%) (12.7 mm/min, 0.75 N)	kPa	65 ± 30	ASTM D1056
Compression Set (50%, 23°C, 22h, recovery 24h)	%	< 30	GB/T 6669-2008
High Temp. Dimensional Stability (70°C, 4h)	%	< 5	ISO 2011 Method B
Thermal Conductivity	W/(m·K)	0.06 ± 0.02	GB/T 10294-2008
Water Absorption	%	< 5	ASTM D1056
Flame Retardancy (T ≥ 6mm)	mm/min	≤ 100	GB 8410-2006

* All values are typical data. Actual performance may vary with application conditions. Not guaranteed values.

4. Compressive Stress-Strain Curve

* The above data are representative values, not guaranteed values.
For specific material property data, please contact us.

5. Typical Applications

Battery pack thermal insulation & cushioning

Energy storage system (ESS) module assembly

Cell-to-cell gap filling and vibration damping

EV & stationary storage battery enclosures

BMS board protection padding

Sealing and dust-proof applications in pack housing

6. Storage & Handling

Store in a cool, dry environment away from direct sunlight and heat sources. Recommended storage temperature: 5°C – 35°C. Keep away from solvents, oils, and strong oxidizing agents. Shelf life: 12 months from date of manufacture under recommended storage conditions.

GESON SUPPLY

EPDM Foam Pad | E3035 Series — Closed-Cell Thermal Cushioning