Silicone Gasket Manufacturers and Suppliers

IQS Directory is a top industrial directory listing of leading industrial silicone gasket manufacturers and suppliers. Access our comprehensive index to review and source silicone gasket manufacturers with preview ads and detailed product descriptions. These silicone gasket companies can design, engineer and manufacture silicone gaskets to your specifications and application need. A quick and easy to use request for quote form is provided for you to contact these silicone gasket manufacturers and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Read customer reviews and product specific news articles. We are the right resource for your information requirement whether its for a manufacturer of silicone gasket materials, clear silicone gaskets, laminated gaskets.

  • Laurel, MD

    Phelps Industrial Products is a major manufacturer, fabricator and distributor for a wide range of industries throughout the world. We employ a wide range of both computerized high speed and manual equipment to fulfill the toughest demands. We also have a wide range of compressed, elastomeric and non-elastomeric materials available. Since our founding in 1945, we have taken great pride in our ability to provide quality solutions for our customers’ needs.

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  • Carson City, NV

    REDCO is your complete source for molded gaskets or die cut gaskets, using a wide range of materials. We pride ourselves on just-in-time delivery and practice a "zero-defect" policy. Since our founding in 1948, it has been our goal to be a one-stop place for your gasket needs. Visit our website for more information!

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  • Grand Rapids, MI

    Kent Rubber Supply has been a trusted supplier of gaskets since 1946. Focusing in exceeding customer service, we leverage the best equipment and the most knowledge staff to ensure we meet our customers unique needs. With our trusted experts, we determine the best rubber, foam, sponge or PVC material for your specific need. We continue serving customers both offshore and domestic.

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  • Prince George, VA

    Since 1979, gaskets have been the focus of our company. VSP Technologies is an award-winning company, innovating new gasket technologies and solutions since our inception. We pride ourselves on our ability to problem-solve and create long-term, comprehensive solutions to fit our customers needs. Our patented designs and experienced specialists are here and ready to serve you! Call us at 800-334-6013 or visit our website today to learn more about our product offerings and services.

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  • 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 gaskets. From aerospace to medical, food processing to military applications we build trust by being responsive to your needs.

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  • Franklin, WI

    CFS is an ISO 9001:2015 manufacturer of custom gaskets utilizing materials such as silicone rubber, EPDM, Poron®, Santoprene®, RN-8011 and Viton®. We can source the gasket material or use customer-supplied materials. Our in-house engineers will work with you to ensure the perfect fit for your custom gasket needs. CFS offers large format cutting, adhesive laminating, and kiss-cutting or split liners for your gaskets. Small runs are a possibility utilizing our dieless knife cutting capabilities.

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  • San Fernando, CA

    Our team at Spira strives to bring you the best gaskets on the market. We exhibit our commitment to quality products by staying at the forefront of ever-changing manufacturing technology. We offer RFI gaskets to suit various applications, with groove-mounted, surface-mounted, and honeycomb filter configurations available. Contact us and we will help you find the gasket that suits your requirements.

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  • Seattle, WA

    As a supplier of gaskets since 1977, Gardico is dedicated to customers in all industrial sectors needing standard & custom gaskets of superior workmanship. With die cutting, slitting, water jet cutting, assembly, laminating & adhesive capabilities, Gardico works with a variety of foam, fiber, felt, cork, plastics, metals & numerous other materials to meet all of their customers’ needs.

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Silicone Gaskets Industry Information

Silicone Gaskets

Silicone gaskets are a type of gasket made of silicone (a synthetic rubber comprised of silicon, oxygen, carbon, hydrogen and, in some but not all cases, other additives). Silicone gaskets are not to be confused with other polymer gaskets, which, instead of having a carbon backbone, have a Si-O-Si backbone.

Quick Links to Silicone Gaskets Information

Applications of Silicone Gaskets

Gaskets are sealing products that fill the space and keep out air and weather in between two mating surfaces. Gaskets all have different applications, depending on the material with which they are made. For silicone gaskets, the most successful applications are those related to consumer products, light industrial needs and medical devices. Examples of applications and settings like these include: temporary food storage containers, sealant for baking materials, waterproofing swim goggles, infusion pumps, dialysis machines and incubators.

Silicone Gasket Design and Customization

Silicone gaskets can be engineered into different silicone grades, each grade reflecting varying qualities and the degree to which said qualities are present. Such properties include flame resistance, heat resistance, steam resistance, chemical/acid resistance, gas resistance and electrical conductivity. There are several special grades of silicone, which are as follow: flame retardant, steam resistant, high tear strength, metal detectable, extreme high temperature, extreme low temperature, chemical/oil/acid/gas resistant, electrically conductive and low smoke emitting. In addition, silicone rubber can be defined by hardness levels, which are arranged on a scale. This scale is expressed as IRDH or Shore A between the numbers of 1 and 10, with 100 being the hardest. Before a silicone gasket is formed, the chosen material can be dyed into any color.

Manufacturing Process of Silicone Gaskets

Manufacturers may perform one of these processes to form a silicone gasket:

Each molding process offers different process speeds and efficiencies and different possible configurations. First, injection molding is a process that uses a molding machine that includes the following components: injectors, metering units, supply drums (or plungers), mixers, a nozzle, and a mold clamp. To work, liquid silicone rubber and a catalyst, each of which is stored in one of the respective supply drums, are pumped at a sustained and constant ratio via the metering units into the mixers. Injecting devices help by pressuring the silicone until they move into the pumping section of the system.

Inside the mixers, which can be static or dynamic, the materials are combined, then driven by pressure into a designated mold. The mold is held securely in place by a mold clamp. Upon completion of the process, the mold clamps open, allowing the newly formed gasket to be removed. Cast molding, or casting, is a simpler process that involves pouring a liquid material into a hollow mold, allowing it to cool and then removing it. Compression molding also involves a mold cavity. However, in this instance, the mold is heated and, after the preheated or liquid silicone is poured in, the mold is covered by a top or plug of some sort. After the mold is covered, applied pressure from the top forces the material inside to cover every area of the mold. The heat and pressure are only removed after the rubber has cured.

Transfer molding is a similar process to compression molding, the main difference being that it starts with an enclosed mold instead of an open mold. Finally, making silicone gaskets via dip molding works just as it sounds. A metal gasket-shaped mold is physically dipped into a vat of fluid or powder silicone. After this, the mold is removed and the new part is allowed to dry.

Points to Consider When Purchasing Silicone Gaskets

As a rule, in the contexts of stress and/or tension, silicone gasket applications must be fairly undemanding. This is because silicone has a relatively low tensile strength as compared to other rubbers, including natural rubber. Many high demand applications are not appropriate for silicone gaskets, as they simply cannot withstand great amounts of tension. By and large, they cannot, for example, be used in automobiles, which tend to put forth large amounts of pressure in the way of compressing, torquing, and frictioning. Silicone does, however, have the ability to work well in the face of temperatures as low as -55 and as high as 300.

To put that in perspective, rubber gasket materials like Viton can begin to break down and exhibit the symptoms of deterioration when the surrounding temperatures are as low as 200. Furthermore, though silicone is not as impact-resistant or tension-resistant as natural rubber, it is much more resistant to ozone cracking and UV rays than natural rubber. Because of its resiliency, silicone gaskets are well-suited to outdoor applications. Silicone gaskets are also well-suited to chemical processing applications and some medical device applications since it is highly chemically inert.

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Silicone Gaskets Informational Video