Silicone Rubber Molders and Molding

IQS Directory provides an extensive list of silicone rubber molders and suppliers. Utilize our website to review and source silicone rubber molders with our easy-to-use features which allow you to locate silicone rubber companies that will design, engineer, and manufacture silicone rubber products for your exact specifications. Our request for quote forms make it easy to connect with leading silicone rubber molders. View company profiles, website links, locations, phone number, product videos, customer reviews, product specific news articles and other production information. We are a leading manufacturer directory who will connect you with the right manufacturers whether you are looking for silicone dust roller, sticky silicone roller, or silicone convertible seam roller.

  • Santa Fe Springs, CA

    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.

    Read Reviews
  • Stuart, FL

    Our job is to offer high quality silicone rubber products to our customers, and we take that job very seriously! We believe in offering the highest quality products and continually look for new ways to save our customers money. Since 1984, we have expanded our offerings to supply our customers with products that meet their needs. Contact us today for more info!

    Read Reviews
  • Trenton, NJ

    We are silicone rubber experts. We have over 100 years of experience manufacturing quality rubber products and we can offer you the very best in affordability, quality, customer service, and dependable shipping. You don’t get to remain in business for 100 years without knowing something, and we are able to share that knowledge with you. Visit us online or give us a call today to get started!

    Read Reviews
  • Chicago, IL

    Accurate Products will satisfy your exact specifications for custom die cut parts of various materials, including sheet rubber, open & closed cell sponge, silicone, polyurethane foam, cork, felt, fibre, electrical grade paper, FDA & MIL spec materials. For superior die cut seals, gaskets, bumper pads, barriers, packing, diaphragms & more, trust our short lead time, great-priced service!

    Read Reviews
  • Carson City, NV

    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. We are experts in compression molding and transfer molding. We also offer just-in-time delivery and boast strict adherence to meeting deadlines. We are a US-based manufacturing company with over 70 years of experience.

    Read Reviews
  • Trevose, PA

    Mason Rubber is a full-service organization assisting in the designing or reverse engineering of custom product to fulfill your production requirements. Injection, transfer and compression molding processes are used to manufacture product using a full range of elastomers. We specialize in bonding rubber to metal.

    Read Reviews
  • Grand Rapids, MI

    Kent Rubber Supply excels at finding solutions for difficult applications or meeting tough deadlines. We specializing in small to large production runs of molded rubber parts. In turn, we offer our customers ultimate flexibility when it comes to a wide choice in shapes, sizes, and wall thicknesses in materials such as PVC and urethane. Our rubber molding services are available both domestic and offshore.

    Read Reviews
  • Minneapolis, MN

    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.

    Read Reviews
  • Southborough, MA

    DTi makes high performance edge seals in silicone, EPDM or PVC/EPDM with a steel or stainless steel substrate. They snap on quickly & securely for an effective seal solution that protect your equipment from the environment, dust, low & high temperatures & moisture. 100’s of COTS variations although custom profiles can be made to your specification & tested preproduction. US made & USA Content compliant. Order free samples on site or call us.

    Read Reviews
  • Tracy, CA

    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.

    Read Reviews
  • Rootstown, OH

    Since 1955, Jet Rubber Company has been custom molding rubber for a variety of industries and various applications. They have built a strong reputation on their ability to provide quality products, on time, and at fair prices. Specializing in many materials, including silicone rubber, they are able to offer standard and custom products to suit all individual and complex tasks.

    Read Reviews
  • More Silicone Rubber Molding Companies

Silicone Rubber Molding Industry Information

Silicone Rubber Molding

Silicone rubber is one of many synthetic rubbers available for use in a variety of commercial and industrial manufacturing processes. It is created using a mixture of silicon, hydrogen, oxygen, and carbon. Other additives may be included, but this varies on a case to case basis.

Quick links to Silicone Rubber Molding Information

Applications of Silicone Rubber

Silicone Rubber is Used in Many Industries, Including:
Automotive Manufacturing
Appliance Manufacturing
Medical Device Manufacturing

Products range from small, practical, semi-universal components (like shaft sealing rings, door seals, gaskets, grommets, and o-rings) to application-specific products (like automotive heating hoses, spark plug caps, lab instruments, and medical devices).

Other Products Made via Silicone Rubber Molding Include:
Syringe Pistons
Respiratory Masks
Implantable Chambers for IV Administration
Lipstick Molds
Makeup Brushes
Circular Lenses
Freeform Lenses
Cooking Aids
Food Containers
Non-Flammable Tape for Electronic Components
Home Repair Products

Material Properties of Silicone Rubber

Silicone rubber is generally known for its chemical inertness, resistance to the negative impact of harsh environments, temperature resistance, and high electrical insulation abilities. However, individual grades, like medical grade silicone or RTV silicone, vary in levels of qualities like flame resistance, steam resistance, chemical resistance, metal detectability, and electrical conductivity. Though it is technically a polymer, silicone acts more like an elastomer in that it is quite elastic and flexible. In addition, unlike other polymers, which have a carbon backbone, silicone rubber has a Si-O-Si backbone.

Some special silicone rubber grades include metal detectable, high tear strength, metal detectable, low smoke emitting, flame retardant, and steam resistant. In addition, material used for silicone rubber molding can be placed on a hardness scale, using Shore A (durometers) or IRHD (International Rubber Hardness Degrees) as units of measurement. These range from 10 to 100, with one 100 being the hardest.

Manufacturing Process of Molded Silicone Rubber

There are five major methods by which silicone rubber molding may be achieved: injection molding, cast molding, transfer molding, compression molding, and dip molding. Injection molding begins with a batch of raw silicone rubber being placed in a long channel, where it is melted by the friction generated by the turning of a large screw. After this rubber has become molten, the process continues with the molten rubber being injected into a mold cavity that is preformed into the desired final shape. Allowed to cool and harden there, the rubber fills up the mold and takes on its shape. Similarly, in cast molding, silicone rubber is poured into an open mold, or hollow cavity, where it takes on the shape of the mold, cools, and hardens.

The transfer molding process is somewhat unique from the two before it. To work, either liquid silicone rubber or a piece of preheated, uncured rubber is placed into a chamber (called the pot). Once there, it is forced into a heated mold cavity by a plunger or ram. If the material is already liquid, it will then simply take the shape of the mold, but if it is solid, it will melt under the influence of the mold temperature and forcing pressure. Either way, the rubber material will be and remain liquid while inside the mold. Once it has uniformly taken on its shape, the rubber is cooled at a control rate that ensures optimal thermoset curing.

Compression molding also employs a heated mold. However, in this case, hydraulic pressure forces the rubber material, which is preheated, into the mold, which is closed, via a small hole. Once inside, the pressure ensures that the material is forced to contact every mold surface and take its shape. It stays there, with the mold closed, until it cures. Finally, dip molding is a process used to coat metal molds in silicone rubber rather than shape silicone rubber inside metal molds. In this case, the rubber is melted and held in a molten state so that steel and/or aluminum molds, which are primed and heated, may be dipped into it from an overhanging rack. In addition to primary molding, silicone rubber can also be dyed, cured and/or manipulated into different grades.

More Silicone Rubber Molding Information

Silicone Rubber Molding Informational Video