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Compounds Available

 

Columbia Rubber Mills has spent over sixty years developing superior quality compounds for all areas of industry. Our world is ever-changing, and we know that the needs of our customers change with the times. We also understand that each customer has their own way of doing what they do—no matter how similar one application may seem to another, every application is unique. We will work with you to develop a compound that meets your specific needs.

We have created special compounds that hold up against age, swell, hardening, ink buildup, abrasion, heat, humidity changes, and compression. Our team will help you determine the material best-suited to your application. With the right compound, your equipment will benefit from longer service life, less swell, and increased productivity and efficiency, and downtime can be significantly reduced.

Our compounds are accurately formulated and properly mixed in strict accordance with our integrated quality control system. Each batch is tested in our lab to ensure it meets all chemical and physical specifications prior to approval for use in production.

Properties: Natural Rubber SBR EPDM Neoprene Nitrile Silicone Hypalon Urethane
Tensile Strength Excellent Good Excellent Excellent Good Poor Excellent Excellent
Hardness Shore A 30-100 30-100 25-80 15-80 17-100 40-70 40-75 22-85
Tear Resistance Good Fair Good Good Fair Poor Fair Excellent
Abrasive Resistance Excellent Excellent Good Excellent Good Fair Excellent Out-Standing
Compression Set Good Good Good fair-Good Good Good Fair Good
                 
Rebound: Natural Rubber SBR EPDM Neoprene Nitrile Silicone Hypalon Urethane
Cold Excellent Good Excellent Very Good Good Excellent Good Good at 68°
Hot Excellent Very Good Excellent Very Good Good Excellent Good Poor at 50°
Dielectric Strength Excellent Excellent Excellent Good Poor Excellent Excellent Excellent
Electric Insulation Good Excellent Good Excellent Good Fair-Poor Poor Excellent Good Fair
Permeability to Gases Fair Very Low Fair Good Low Fair Good Low Fair
Acid Resistance Dilute Fair Good Fair Good Good Excellent Excellent Good fair Very Good Poor 
Acid Resistance Concentrated Fair Good Excellent Fair Good Good Excellent Good Good fair Very Good Poor
                 
Solvent Resistance: Natural Rubber SBR EPDM Neoprene Nitrile Silicone Hypalon Urethane
Aliphatic Hydrocarbons Poor Poor Poor Good Excellent Poor Good Excellent
Aromatic Hydrocarbons Poor Poor Poor Fair Good Poor Fair Good
Oxygenated (Keytone-Acetates) Good Good Good Poor Poor Fair Poor Poor
Lacquer Solvents Poor Poor Good Poor Fair   Poor Poor Poor
Lubricating Oil Poor Poor Poor Good Very Good Good Good Excellent Excellent
  Gasoline and Oil Poor Poor Poor Good Excellent Good Good Excellent
Vegetable Oils Poor Good Poor Good Good Excellent Good Good Excellent
Water Absorption Very Good Very Good Very Good Good Fair Good Good Very Good Good at 70° Poor at 121°
                 
Resistance to: Natural Rubber SBR EPDM Neoprene Nitrile Silicone Hypalon Urethane
Oxidation Good Good Excellent Excellent Good Excellent Excellent Excellent
Ozone Fair Fair Excellent Excellent Fair Excellent Out Standing Out Standing
Sunlight Poor Fair Very Good Very Good Poor Excellent Out Standing Good
Heat Good Excellent Excellent Excellent Excellent Excellent Excellent Good
Flame Poor Poor Poor Good Poor Fair Good Good
Heat Good Very Good Excellent Excellent Very Good Good Excellent Fair
Cold Excellent Good Excellent Good Good Excellent Good Excellent
Major Attributes Resilience Resistance to Abrasion General Purpose Oil Resistance Weather Oil Resistance Heat Resistance Release Weather ability Abrasion Resistance

Columbia Rubber Mills’ molded, custom, and specialty rubber products are designed to maintain their stability through even the most extreme environmental changes. You’ll get quality you can count on every time.

Request a quote on rubber rollers, linings, and more, or contact us for more information. Columbia Rubber Mills can manufacture spare rollers or pulleys (cores and covers) for all your critical positions.