What is EPDM Rubber?
EPDM stands for Ethylene Propylene Diene Monomer. It's a synthetic rubber compound specifically engineered for outdoor and automotive applications where exposure to weather, UV radiation, and temperature extremes is unavoidable.
Key Advantages
1. Outstanding Weather Resistance EPDM rubber maintains its flexibility and sealing properties across an extreme temperature range of -40°C to +120°C. It won't crack in harsh winters or degrade in summer heat.
2. UV & Ozone Resistance Unlike natural rubber and some synthetic alternatives, EPDM is highly resistant to UV radiation and ozone — two of the leading causes of rubber degradation in outdoor applications.
3. Excellent Water Resistance EPDM has one of the lowest moisture absorption rates of any rubber compound, making it ideal for preventing water ingress around doors, windows, and boots.
4. Long Service Life A quality EPDM seal typically lasts 10-15 years or more under normal conditions, compared to 3-5 years for PVC alternatives.
5. Colour Stability EPDM maintains its black colour throughout its service life without fading or discolouration, keeping your vehicle looking its best.
EPDM vs PVC: Quick Comparison
| Property | EPDM | PVC |
|---|---|---|
| Temperature range | -40°C to +120°C | -10°C to +60°C |
| UV resistance | Excellent | Poor |
| Service life | 10-15 years | 3-5 years |
| Flexibility | High | Medium |
| Cost | Higher | Lower |
| Recyclability | Limited | Good |
Why We Use EPDM at Genuine Motors
At Genuine Motors, all our weatherstrip seals are manufactured from premium EPDM rubber compounds. Many of our seals feature co-extruded metal reinforcement for added rigidity and a factory-like fit. We believe that using the right materials is essential for products that need to perform reliably for years in demanding conditions.