Material of the Month: EPDM Rubber

Highly Resistant and Versatile: A Solution for Everyday and Specialty Applications

This blog post is the third installment of a new CGR Products content series called “Material of the Month.” The series spotlights some of the unique materials that CGR works with, as well as their common applications.

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Material selection can make all the difference when bringing a simple design idea to life. From cross linked polyethylene (XLPE) to acrylic foam tapes, our Material of the Month series highlights the benefits of these unique materials. This week, we’re featuring EPDM rubber.

What is EPDM Rubber?

neopreneEthylene propylene diene monomer (EPDM) rubber, also known as synthetic rubber, is a smooth elastomer used in a wide variety of both specialty and general-purpose applications. It is resistant to heat, weather, and steam, and also functions as an excellent electrical insulator.

Benefits and Uses

EPDM rubber is exceptionally resistant to heat, oxidation, electricity, ozone, weather aging, and polar solvents such as alcohol, water, ketones, alkalines, and diluted acids. The water resistance and insulating qualities make EPDM rubber a popular choice for cable-jointing and other electrical applications.

EPDM rubber’s most frequent use is in seals for automotive vehicle windows, doors, and trunks, as well as cold-room doors, such as a refrigerator. The material’s strong insulating properties help to prevent water, heat, or cold from entering the sealed environment.

Other common uses of EPDM rubber include:

  • Automotive weather stripping
  • Tubing and hoses
  • Belts
  • Glass-run channels
  • Washers

Custom Fabrication at CGR

At CGR Products, we offer smooth, black commercial EPDM sheet rubber with thicknesses ranging from 1/16” to 1/2” and a PSI of 725. Our precision die cutting, knife cutting, and waterjet cutting services can trim synthetic rubber sheets to fit the exact shape and size required for your application.

Want more information about working with EPDM? CGR offers charts with information about ethylene propylene’s relative costs and average temperature ranges.
Find the Temperature Range & Cost of Your Polymer Material


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Mike Burris

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Mike Burris is in Product Development at CGR Products. A member of the CGR team for over 15 years, Mike also holds a 3M certification from its Master Estimator program and an AAB degree in Business Administration.


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