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Silicone Rubber Molding

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Silicone rubber differs from other polymers in that it does not have a carbon backbone, but a Si-O-Si backbone. Also, even though it is a polymer, silicone rubber acts like an elastomer; it can be very flexible and elastic. Read More…

Silicone Rubber Molding Silicone rubber is a synthetic rubber created by mixing silicon with carbon, hydrogen, oxygen and sometimes other additives.
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Leading Manufacturers

Santa Fe Springs, CA  |  562-941-4800

RD Rubber Technology Corp is an ISO 9001:2015 certified company. We offer injection, LIM and transfer molding, rubber to metal bonding, engineering support, tooling design and more. Our customers rely on us to give them the best possible production solutions for rubber molding. From aerospace to medical, consumer products to military applications we build trust by being responsive to your needs.

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RD Rubber Technology Corporation $$$

Chicago, IL  |  800-782-7776

Rubber molding is what we do best. We believe in offering our very best to all customers no matter how large or small. For over 65 years we have pushed the boundaries of what we do and continue to improve our products and customer service every day.

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Accurate Products, Inc. $$$

Trenton, NJ  |  609-394-5245

With more than a century of manufacturing experience, Pierce-Roberts Rubber Co. is your source for custom molded rubber products.

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Pierce-Roberts Rubber Co. $$$

Stuart, FL  |  772-286-9278

If you have a need custom rubber molding for products with a fast turnaround, Britech Industries is the company you need to call. We do molded, extruded and die cut rubber – of various products and in the colors and compounds you need.

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Britech Industries $$$

Carson City, NV  |  800-733-2648

REDCO Rubber Engineering & Development is your complete source for rubber molding products, including rubber rollers, die-cut gaskets, and custom rubber products to suit your application.

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REDCO Rubber Engineering & Development Company $$$

Canonsburg, PA  |  866-672-8100

National Rubber was founded in 1997 with the values of variety, consistency, quality, open communication, and timely delivery at its core.

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National Rubber Corp. $$$

Trevose, PA  |  215-355-3440

Mason Rubber is a full-service organization assisting in the designing or reverse engineering of custom product to fulfill your production requirements.

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Mason Rubber Co., Inc. $$$

Tinley Park, IL  |  800-662-1009

Aero Rubber is an ISO 9001:2015-registered, world-class manufacturer of molded rubber products, custom molded rubber and molded rubber goods.

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Aero Rubber Company, Inc. $$$

Rootstown, OH  |  330-325-1821

Jet Rubber Company, employee-owned, offers custom molded rubber and rubber to metal components. They offer rubber molding in a wide array of standard rubber products as well as custom options for those more complex and difficult jobs.

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Jet Rubber Company $$$

Akron, OH  |  877-771-6766

With over 30 years of experience in the rubber molding industry, we remain committed to offering the best of our time and energy to all customers no matter how large or small.

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Premier Seals Manufacturing $$$

Grand Rapids, MI  |  616-538-4970

Kent Rubber Supply leverages our experience, innovation and continuous development to ensure our customers get the best products. We specialize in small to large batch production runs of molded rubber parts, allowing us to offer ultimate customization when it comes to a wide variety of specs. Our products vary in shapes, sizes and wall thicknesses in materials such as PVC and urethane. Both domestic and offshore services are available.

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Kent Rubber Supply Co. $$$

Southborough, MA  |  508-229-2000

Spring-Fast Grommets with fusion bonded nylon & a polymer cushion prevent wire chafe & give you best in class performance, 49% install savings & a 9.5x efficiency improvement. The nylon clad metal substrate snaps on with finger pressure & self locks - eliminating adhesives & the old slow & costly gluing process. It is used widely used in across the OEM & contract manufacture sectors. ISO 9001:2015 & AS 9100-D. Collaborative product customization available. Request free samples on site.

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Device Technologies, Inc. $$$
placeholder image RD Rubber Technology Corporation Accurate Products, Inc. Pierce-Roberts Rubber Co. Britech Industries REDCO Rubber Engineering & Development Company National Rubber Corp. Mason Rubber Co., Inc. Aero Rubber Company, Inc. Jet Rubber Company Premier Seals Manufacturing Kent Rubber Supply Co. Device Technologies, Inc.

Silicone rubber can be engineered in many different grades. These grades distinguish themselves from each other in terms of their respective qualities of steam resistance, electrical conductivity, flame resistance, metal detectability, chemical resistance and other physical properties.

Most silicone rubber varieties share in common naturally-occurring qualities of high electrical insulation, resistance to extreme temperatures, chemical inertness and resilience in harsh environments.

Silicone rubber can be molded into an unending list of indispensable products that are used across industry and commerce; medical devices, gaskets, lab instruments, automotive heating hoses, shaft sealing rings, door seals, o-rings, spark plug caps and rubber grommets can all be made using the silicone rubber molding process.

The aerospace, medical, automotive, construction, electronics, appliance manufacturing, architecture, petrochemical and pharmaceutical industries all make use of silicone rubber products.

Silicone Rubber Silicone Rubber - RD Rubber Technology Corporation

Silicone rubber molding is accomplished in five different ways: cast molding, injection molding, compression molding, transfer molding and dip molding.

The cast molding process involves pouring silicone rubber in its liquid form into an open mold, which is a hollow cavity in which the silicone rubber solidifies and takes shape. The injection molding process involves a collection of raw silicone rubber, which is melted in a long channel by friction caused by a large, turning screw. Once molten, the silicone rubber is injected into a mold cavity that gives the rubber its shape, after which the silicone rubber cools and hardens.

In compression molding, silicone rubber is preheated and squeezed into a heated mold cavity. Pressure is then applied to force the silicone rubber into contact with every mold surface, which creates a precisely-molded finished product. The transfer molding process involves a plunger-like device built into a mold. First, the silicone rubber is injected into the mold's cavity through small holes, after which a piece of uncured silicone rubber is placed in a chamber.

The mold is closed and hydraulic pressure is used to force the silicone rubber through a small hole into the cavity. The mold is held closed while the silicone rubber cures. Lastly, in dip molding silicone rubber is kept in a liquid state while heated and primed aluminum or steel molds are dipped into the liquid silicone rubber from an overhanging rack.

Silicone Rubber Molding Informational Video