Leading Rubber Injection Molding Manufacturers

Rubber injection molding is the process by which raw rubber material is injected into a metal mold cavity to create a useful product. Vulcanization, or curing, is a chemical reaction that applies pressure to cross-link the rubber’s polymer chains. Injection rubber molding is the most popular rubber molding technique. Manufacturers create customized projects, complex pieces, and big-volume production runs using rubber injection molding. Read More…

Rubber Injection Molding The advent of molding techniques in the manufacturing industry has completely revolutionized the mass production processes. The concept of molding and the various conceptual variations has given birth to multifarious molding methods. One variation is the rubber injection molding process.

RD Rubber Technology Corp is an ISO 9001:2015 / AS9100:2016 certified and ITAR registered company. We offer compression, transfer, injection and Liquid Injection molding, rubber to metal bonding, engineering support, tooling design, machining and more. Our customers rely on us to give them the best possible production solutions for rubber molding. From aerospace to medical, food processing to...

RD Rubber Technology Corporation $$$

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.

Britech Industries $$$

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

Pierce-Roberts Rubber Co. $$$

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.

Accurate Products, Inc. $$$

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.

REDCO Rubber Engineering & Development Company $$$

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

Mason Rubber Co., Inc. $$$

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...

Kent Rubber Supply Co. $$$

Minnesota Rubber and Plastics (MRP) is a leader in material compound development and the manufacturing of custom elastomeric and thermoplastic components. With facilities across North America, Europe, and Asia, MRP collaborates with original equipment manufacturers to solve difficult sealing and component challenges across multiple markets. Capabilities include materials science and formulation,...

Minnesota Rubber & Plastics $$$

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...

Device Technologies, Inc. $$$

At Dynatect Ro-Lab, Inc., we pride ourselves on our expertise in rubber molding, offering a comprehensive range of solutions to meet diverse industrial needs. With a rich legacy in the field, we have honed our capabilities to excel in both large and small parts in either low- or high-volume.

Dynatect Ro-Lab $$$

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.

Jet Rubber Company $$$
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placeholder image RD Rubber Technology Corporation Britech Industries Pierce-Roberts Rubber Co. Accurate Products, Inc. REDCO Rubber Engineering & Development Company Mason Rubber Co., Inc. Kent Rubber Supply Co. Minnesota Rubber & Plastics Device Technologies, Inc. Dynatect Ro-Lab Jet Rubber Company

rubber injection molding

Injection Molding Process

The injection molding process allows for acute precision. First, manufacturers melt the raw rubber. The rubber flows in liquid form into the mold cavity through a barrel or nozzle. The mold is clamped tightly to prevent or reduce flashing.

In injection molding, chemical reactions harden the polymer chains inside the raw rubber. Long polymer chains are forced to cross-link to prevent them from moving independently. As a result, the rubber material stretches or shrinks as the force is applied or released. The rubber forms intricate shapes.

The engineers must consider the placement of the separating line while injection molding to ensure it has a minimal draft angle. The mold's design is regarded as the cornerstone of part development. The finished mold is then converted into a metal mold. Sometimes, beryllium-hardened aluminum, hardened steel, or copper are used to create and manufacture molds. After the mold is created and cast, it is tested to make sure it accurately conforms to the original dimensions.

rubber injection molding machine

Types of Rubbers Used for Injection Molding

  • Natural rubber
  • Silicone
  • Nitrile rubber
  • Fluorosilicone
  • Liquid silicone rubber
  • Urethane
  • Butyl
  • Fluorocarbon

Products Made with Rubber Injection Molding

Rubber Grommets

Rubber grommets are rings placed around metal apertures to shield the opening. Rubber grommets are often used for wiring.

Rubber Plugs

Rubber plugs are typically used to protect edges and joints on machinery. In addition, rubber plugs can be used to conceal wires that are a part of an intake wiring system under specific circumstances. There are many rubber plugs, including the connector, the T, the plus, and the washer.

Vacuum Cups

Vacuum cups are another name for rubber suction cups. They serve as a handling mechanism for objects with flat surfaces like metal sheets, glass, tubes, wood panels, or manufactured things. There are many types, styles, and sizes of rubber suction cups. However, bellows and flat rubber suction cups are the two primary varieties.

Rubber Isolators

Rubber isolators are used the most often in industries. They shield equipment and home appliances from vibration-related harm. They are also in charge of maintaining the machinery's level and position while stationary. Mounts, bumpers, leveling pads, bushings, and shock mounts are examples of rubber isolators. Controlling vibrations is a crucial component of equipment operation.

rubber injection molding products

Advantages of Rubber Injection Molding

  • High accuracy
  • Enables more complex designs
  • Eliminates performs in a short cycle period
  • Less rubber and flash waste
  • More durometer shore choices
  • Excellent for requirements requiring high volume production

Disadvantages of Rubber Injection Molding

  • Higher setup expenses
  • Smaller quantities of parts can be expensive
  • Costlier equipment and tools

Choosing the Proper Rubber Injection Molding Company

To make sure you have the most beneficial outcome when selecting a rubber injection molding company, it is important to compare at least 4 to 5 companies using our rubber injection molding directory. Each rubber injection molding company has a business profile page that highlights their areas of experience and capabilities and a contact form to directly communicate with the company for more information or request a quote. Review each rubber injection molding company website using our proprietary website previewer to get an idea of what each company specializes in, and then use our simple RFQ form to contact multiple rubber injection molding companies with the same form.

Rubber Molding Power Pages

Compression Molding

Compression Molding

Molding is a manufacturing process that uses a mold - the latter being a solid container used to give shape to a piece of material. It is a forming process. The form is transferred from the mold to the material by...

Grommet Edging

Grommet Edging

Grommet edging protects electrical cables, wires and other sensitive components from abrasion and chafing as they pass through or over rough or sharp edges or surfaces. Chafing can lead not only to loss of data and operational...

Rubber Injection Molding

Rubber Injection Molding

Rubber injection molding is when uncured rubber is transformed into a usable product by injecting raw rubber material into a mold cavity made of metal. The applied pressure produces a chemical reaction like...

Rubber Latches

Rubber Latches

Rubber latches are latches made of rubber or are composed of rubber components. They are used in the automotive, aerospace, and medical equipment industries due to their flexibility, durability, and non-abrasive properties...

Rubber Molding

Rubber Molding

Rubber molding is a process of transforming uncured rubber or an elastomer into a usable product by transferring, compressing, or injecting raw rubber material into a metal mold cavity...

Rubber Overmolding

Rubber Overmolding

There are several methods to perform rubber overmolding, and each method has its own unique advantages and disadvantages. The choice of method typically depends on the design and material requirements of the product being...

Silicone Rubber Molding

Silicone Rubber Parts

Silicone rubber molding is a method for shaping, forming, and fabricating silicone rubber parts and products using a heated mold. The process involves compressing or injecting silicone rubber into a mold where it takes the shape and form of the mold cavity...

Rubber Bushings

Rubber Bushings

A rubber bushing is a form of vibration isolator that is placed between two parts to limit the motion between them and absorb, mollify, and buffer the energy produced by their interaction. They are very...

Rubber Extrusion

Extruded Rubber

Extruded rubber is a group of products made by softening and pressurizing an elastomeric compound and forcing it to flow through a hard tool called a die. The resulting product is a continuous piece of material that has the same cross-section throughout its length...

Rubber Gaskets

Rubber Gaskets

Rubber gaskets are elastic components used for mechanically sealing the microscopic gap between two mating surfaces or joints. Examples of these surfaces are flange faces of piping and fittings, mating surfaces of an...

Rubber to Metal Bonding

Rubber to Metal Bonding

Rubber to metal bonding is when a rubber part has to be adhered to a metal part, a metal component is chemically prepared and is attached or encapsulated as part of the process to become a bonded rubber part...

Urethane Casting

Urethane Casting

Urethane casting is the process of injecting polyurethane and additive resins into a soft mold usually made of silicone elastomer. The casting process is similar to injection molding; injection molding differs by using hard, metal molds...

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