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The Challenge

Goodyear Rubber of Southern California was tasked with developing a high-hardness Nitrile Butadiene Rubber (NBR) compound (90A durometer) for efficient injection molding. The project required a material that could maintain excellent oil and fuel resistance while overcoming the inherent difficulties of high-viscosity rubber.

The team needed to engineer a high-performance sealing solution capable of meeting strict industrial requirements while facing:

  • Material Flowability Issues: High viscosity made mold filling difficult without excessive pressure or scorch.

  • Injection Molding Inefficiencies: The need to maintain consistent cure times while preventing premature crosslinking.

  • Strict Performance Demands: Requirements for low compression set, extreme temperature resistance, and chemical durability.

The goal: optimize cycle times and minimize material waste without compromising the mechanical integrity of the final seals.

The Results

The optimized NBR 90A injection molding process delivered:

  • 🚀 Improved Injection Performance Flow rate increased by 25%, ensuring efficient molding with minimal defects.

  • 🛡️ Enhanced Seal Durability Achieved a low compression set of <12% with superior resistance to oil and fuel.

  • ♻️ Reduced Scrap Rate The optimized process successfully reduced material waste by 18%.

  • ⏱️ Shortened Cycle Times Total production time decreased by 15%, boosting overall manufacturing efficiency.

Impact

This custom NBR 90A compound and optimized molding process now provide a high-performance solution for demanding environments, improving reliability in:

  • Automotive fuel and oil systems.

  • High-pressure industrial sealing applications.

  • Extreme temperature chemical processing.

The result: a cost-effective, durable sealing solution that exceeds industry expectations for performance and efficiency.

Let’s Build Your Custom Solution

If you need a custom NBR compound, high-durometer elastomer, or optimized injection molding solution, Goodyear Rubber of Southern California can engineer a material tailored to your specific application.

👉 Contact us today to discuss your project.

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