Silicone Injection Molding Services

We are a US-based manufacturer specializing in high-precision silicone injection molding and Liquid Silicone Rubber (LSR) molding. From complex medical components to infant products, we deliver high-quality, custom-molded silicone parts designed for performance.

The Liquid Silicone Rubber (LSR) Molding Process

Liquid Silicone Rubber (LSR) molding is an advanced process ideal for creating flexible, durable, and high-precision parts. Unlike plastics, LSR is a thermoset polymer that is permanently cured during the molding process. We inject the two-part liquid compound into a heated mold, where it vulcanizes to form a stable, cross-linked silicone part. This method is perfect for parts requiring intricate geometries, tight tolerances, and superior material properties.

 

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Advantages of Silicone & LSR Molding

Silicone offers unmatched performance for demanding applications. Key benefits include biocompatibility for medical devices, extreme temperature resistance (-65°C to 150°C), excellent durability and flexibility (variable durometer), and inherent resistance to UV and chemicals. Its hypoallergenic and inert properties make it the ideal choice for infant care products and other food-grade products such as pet bowls and feeders.

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Applications for Custom Silicone Molding

 Our silicone molding expertise serves a wide range of critical industries. We partner with companies to produce:

  • Medical Components: Seals, gaskets, nursing pads, surgical grips, and patient-contact components requiring biocompatibility.
  • Electronics: Waterproof seals, protective casings, and keypad interfaces.
  • Infant Care: Pacifiers, bottle nipples, and teething toys that are safe and durable.
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How We Operate

Quality, safety, and customer satisfaction are the core values our injection molding services are founded on.

When appropriate, we do 100% inspection. In other cases, we work with you, our customer, to develop AQL standards. Our return rate of less than 0.01 percent speaks to our attention to detail. We source all of our molds in the United States for superior quality and protection of intellectual property. This also shortens lead time, so we can get your custom injection molding product started and brought to market that much sooner. We handle both large and small runs with the same professionalism and efficiency, and we will always work within your tight schedule.

We will consult with you on materials, color integrity, durability, and texture to find the right match for your product, and will source it from a network of reputable material suppliers based primarily in the United States.

We also work closely with mold fabricators, most of whom are headquartered near us in upstate New York, to ensure top quality, a shortened lead time and a quick resolution to any issues.

Extreme Molding is a trusted leader in silicone injection molding for high-end consumer and life science applications. We specialize in products for women and babies, including nursing pads, and food-safe silicone pacifiers, teethers and dinnerware. We offer one-of-a-kind silicone expertise and have a strong network within the materials supplier community.

FAQs About Silicone Molding

What is the difference between silicone molding and injection molding?

Injection molding is a broad manufacturing process, while silicone molding is a specific application of that process. We use specialized injection molding machines to inject Liquid Silicone Rubber (LSR) into a mold to produce a final part. So, silicone molding is a type of injection molding focused specifically on the silicone material.

How much does a silicone injection mold cost?

The cost of a silicone injection mold (the "tooling") varies significantly based on several factors, including the complexity and size of the part, the number of cavities in the mold, and the type of steel used. While initial tooling can range from a few thousand to tens of thousands of dollars, it enables the highly efficient and cost-effective production of thousands or millions of parts. For a precise estimate, we recommend discussing your project with our engineering team.

How strong is injection molded silicone?

Injection-molded silicone is exceptionally strong and durable. Its strength is defined by properties like tensile strength (resistance to stretching), tear resistance, and durometer (hardness). We can help you select a Liquid Silicone Rubber (LSR) to meet your requirements, resulting in parts that are flexible yet resilient enough to withstand repeated stress and extreme temperatures without tearing or deforming.

Partner with a US-Based Silicone Molding Manufacturer

Ready to start your project? Our engineering team is ready to assist with material selection and mold tooling to ensure your components are optimized for manufacturability. As your dedicated silicone injection molding partner, we are committed to quality, precision, and on-time delivery.

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