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Rubber Injection Molding

A reliable source for Rubber Injection Molding information and leading Rubber Injection Molding Companies & Suppliers.

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.
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Leading Manufacturers

Santa Fe Springs, CA  |  562-941-4800

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 military applications we build trust by being responsive to your needs.

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RD Rubber Technology Corporation $$$

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 $$$

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. $$$

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. $$$

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. $$$

Minneapolis, MN  |  1-800-927-1422

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, fully functional product prototyping, and operational excellence and supply chain consolidation.

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Minnesota Rubber & Plastics $$$

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. $$$

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 $$$

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 Britech Industries Pierce-Roberts Rubber Co. Accurate Products, Inc. REDCO Rubber Engineering & Development Company National Rubber Corp. Mason Rubber Co., Inc. Minnesota Rubber & Plastics Premier Seals Manufacturing Kent Rubber Supply Co. Aero Rubber Company, Inc. Jet Rubber Company Device Technologies, Inc.

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

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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...

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