What is the Difference Between Neoprene and EPDM?

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Neoprene and EPDM are both general-purpose synthetic rubbers, but they have some key differences that make them more suitable for specific applications. Here are the main differences between Neoprene and EPDM:

  • Cost: EPDM is generally cheaper than Neoprene.
  • Temperature Resistance: EPDM can withstand higher temperatures, up to 300-350°F, while Neoprene can handle up to 225°F. EPDM also provides better low-temperature flexibility compared to Neoprene.
  • Noise Resistance: EPDM is more noise-resistant than Neoprene.
  • Electrical Insulation: EPDM is a better electrical insulator than Neoprene.
  • Chemical Resistance: Neoprene has better resistance to chemicals, oil, and gas compared to EPDM.
  • Thermal Insulation: Neoprene is a better thermal insulator than EPDM.
  • Flame Resistance: Neoprene is more flame-resistant than EPDM.
  • UV and Ozone Resistance: EPDM has superior resistance to UV and ozone compared to Neoprene.

Both rubbers are used in gaskets, conveyor belts, and outdoor applications, and they have fair to good tear resistance, better abrasion resistance, and excellent weathering properties. However, the specific requirements of your project, such as material resistance, temperature, physical durability, and cost, will help determine which material is best for your parts.

Comparative Table: Neoprene vs EPDM

Here is a table comparing the differences between Neoprene and EPDM:

Property EPDM Neoprene
Abbreviation Ethylene Propylene Diene Monomer Synthetic Rubber produced from Chloroprene
Appearance Sponge, soft, and flexible Sponge, soft, and flexible
Resistance Properties Better resistance to heat, steam, and ozone Better resistance to oil, chemicals, and weather
Temperature Range -60 to 350 degrees Fahrenheit Up to 225 degrees Fahrenheit
Cost Cheaper than Neoprene More expensive than EPDM
Noise Reduction Excellent noise reduction capabilities -
Electrical Insulation Excellent electric insulator -
Oil and Acid Resistance Swells in contact with oils or acids Resistant to oils, acids, and alkalis
Weather and Ozone Resistance Resistant to weather and ozone, but not as good as Neoprene Resistant to weather and ozone

Both EPDM and Neoprene are robust elastomers with good tear and abrasion resistance properties. However, they have some key differences that make them more suitable for specific applications. EPDM is less expensive, has better heat resistance, and excellent noise reduction capabilities, while Neoprene has better resistance to oil, chemicals, and weather.