Manufacturer of Custom Rubber Molded Products
Pierce-Roberts Rubber Co.

Precision Molded Rubber Components

At Pierce-Roberts Rubber Company, we take pride in meeting your individual rubber mixing and formulating needs. Because we understand the value of working with high-quality rubber, we're committed to providing our clients with custom mixtures made from the finest natural and synthetic raw materials. We feature a consistent supply of black and colored high performance compounds from which we develop custom rubber parts and components, and we meet precise ASTM, Mil-R, and customer-specific standards to ensure product integrity and customer satisfaction. Our custom products serve a diverse range of applications, and can be found at work in over 10 different industrial sectors.

In addition to custom rubber mixing, Pierce-Roberts also offers formulating services to create desired properties in rubber-based products. By developing and preparing a custom designed mixture of ingredients, we can produce rubber with temperature resistance, water resistance, and other designated properties. All formulating and mixing is performed in-house to ensure the quality, purity, and consistency of our formulas. To learn more about custom rubber mixing and formulating with Pierce-Roberts and how we can serve you, please contact us today.

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Custom Rubber Mixing and Formulating


  • Butyl
  • EPDM
  • Fluroelastomers
  • Natural Rubber
  • Neoprene
  • Nitrile
  • SBR
  • Silicone
  • Polyurethane
  • VitonĀ®
Industries Served
  • Aerospace
  • Chemical
  • Dairy
  • Electronic
  • Gaming
  • Fire Protection
  • Food Processing
  • Marine
  • Medical
  • Military
Intended Application
  • Aircraft Plank
  • Aircraft Caulk
  • Ski Lift Tires
  • Abrasion Resistance
  • Acid Resistance
  • Conductive
  • Fuel Oil Safe
  • LP Gas Safe
  • Non-Conductive
  • Oxidation Resistance
  • Ozone Resistance
  • Radiation Resistance
  • Sunlight Resistance
  • Water Resistance
Hardness Range

15 Durometer

90 Durometer

Temperature Range


  • -180°F
  • -117.78°C


  • -500°F
  • -260°C

Mixing Capacity

1 lb

100 lbs

  • Physical Properties Testing
  • Rheometer Curve
  • Repeatability
  • Data Sheets Available
Additional Services Provided
  • Anodizing
  • Machining
  • Painting
  • Rubber to Metal Bonding
  • Rapid Prototyping
Industry Standards
  • ANSI
  • American National Standards Institute
  • ASTM
  • American Society for Testing and Materials
    • D2000
  • FDA
  • Food and Drug Administration
  • ISO
  • International Organization for Standardization
    • ISO 9001:2015
  • Mil-Spec
  • Military Specifications
  • RoHS
  • Restriction Of Hazardous Substances (Compliant)
  • SAE
  • Society of Automotive Engineers
Production Volume

2 lbs

100 lbs

Typical Lead Times Available

3 Days

5 Days