Core Advantages of EPDM

- EPDM features excellent weather resistance, ozone resistance, high and low temperature resistance, water resistance, steam resistance and superior electrical insulation. Its main drawback is poor resistance to oil and fuel. It is the preferred sheath material for outdoor, high-voltage and long-term anti-aging scenarios in new energy and power industries.

I. Typical Applications in New Energy Industry

1.New Energy Vehicles

- High-voltage wiring harness sheaths for motors, inverters and external wiring of battery packs

- Outer sheaths for charging ports and fast/slow charging cables

- Chassis wiring harnesses and pipeline protective sleeves

- Sheaths and waterproof sealing sleeves for battery pack cooling pipelines

**Features**: Long-term stable service at -40℃ to 150℃, resistant to chassis gravel impact, water and coolant with stable insulation performance.

2. Energy Storage Systems

- Sheaths for internal and external high-voltage DC cables of energy storage cabinets

- Insulation sleeves for busbars and junction bars

- Cable protective sleeves for outdoor energy storage boxes

**Features**: Moisture and salt spray resistant, available in low-smoke halogen-free flame retardant grade, suitable for long-term enclosed and outdoor environments.

3. Photovoltaic & Wind Power Industry

- Sheaths for photovoltaic DC cables and module lead wires

- Sheaths for internal and external power cables and control cables inside wind turbine towers

- Wear and weather resistant sleeves for engine room and blade lead wires 

**Features**: Outstanding UV and ozone resistance, stable outdoor service life up to 20-25 years, widely used as mainstream sheath material for photovoltaic cables.

II. General Applications in Traditional Power & Industrial Fields

- Outer sheaths for medium and high voltage power cables and overhead cables

- Sheaths for motor lead wires and transformer outlet wires

- Sheaths for welding machine cables and mining cables

- Connecting wires for outdoor equipment, street lamp cables and port machinery cables

- Outer protective sleeves for water heating and steam pipeline thermal insulation layers

III. Key Performance of EPDM Sheaths

- Weather & ozone resistance: No cracking after long-term outdoor exposure

- Temperature resistance: Service range from -50℃ to 150℃, no embrittlement at low temperature

- Good resistance to water, steam, weak acid and weak alkali

- Outstanding electrical insulation, ideal for high-voltage cables

- High elasticity, good bending resistance, drag resistance and impact resistance

IV. Usage Taboos & Notes

1. Keep away from gasoline, engine oil and lubricants. EPDM swells and softens rapidly when exposed to mineral oil and loses efficacy. Choose CSP, neoprene or fluororubber for oily working conditions.

2. Flame retardant modification is necessary. Pure EPDM is flammable, so flame retardant or low-smoke halogen-free EPDM must be adopted for new energy and cable usage.

3. Avoid long-term contact with strong polar solvents such as esters, ketones and chlorinated hydrocarbons, which will cause swelling and cracking.

4. Prefer carbon black reinforced black EPDM for outdoor use with strongest UV and aging resistance; colored EPDM is prone to fading and aging outdoors.

5. Follow the minimum bending radius during installation. Excessive bending will damage inner wires and thin the sheath wall.

V. Brief Selection Guidelines

- Prioritize EPDM for outdoor occasions requiring anti-aging, waterproof and wide temperature resistance performance

- Do not use EPDM in environments with oil, fuel and organic solvents

- EPDM is a mature mainstream solution for new energy high-voltage wiring, photovoltaic, wind power and charging pile cables