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 800-348-9784

    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 800-733-2648

    Silicone is a rubber that has an exceptionally high level of flexibility and is resistant to extreme temperatures. At REDCO, silicone is just one of the materials from which we are proud to manufature our gaskets. A full list of silicone properties can be found on our website. For any further inquiries, feel free to contact our staff!

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  • Grand Rapids, MI 616-538-4970

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

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  • Newport, MN 866-901-0014

    High-quality gaskets and seals are our priority at PDI Gaskets & Seals. We offer a wide range of brands and sizes for our gaskets and seals, and we even offer custom options. We carry a wide line of products including soft gaskets, metallic gaskets, sanitary gaskets, gasket sheet, gasket tape, fiberglass tape, joint sealant, expansion joints, packing, absorbents, and o-rings. If there is a product you need but don't see on our site, please reach out, and we will find it for you!

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  • Bellmawr, NJ 800-210-5000

    Mercer Gasket & Shim brings you quality custom gaskets, o-rings & expansion joints in a wide selection of materials, including rubber gaskets, ceramic fiber gaskets, viton gaskets, metal gaskets & many others. We pride ourselves on speed & flexibility, offering 24 hour service & 100% on-time delivery.

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  • Stuart, FL 772-286-9278

    At Britech Industries, both our custom and stock items come in a variety of shapes, colors and designs. Our company’s goal is to meet the specifications of our customers, and we have highly trained engineers to do just that. We are partnered with different companies for maximum extrusion options and we are available for our customers at any time. Britech are the plastic extrusions experts. If you would like to contact an extrusion specialist, call or visit our website today!

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  • Seattle, WA 800-537-9663

    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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  • Canonsburg, PA 866-672-8100

    Typically heat resistant, silicone rubber gaskets are an essential part in a variety of industries including electrical, aerospace, office machines and surgical and food processing. National Rubber Corporation is an industry leader in silicone rubber gaskets. We are here to serve you and all of your unique needs. Designed to handle both hot and cold temperatures, you can trust that our silicone rubber gaskets will protect your product.

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  • Franklin, WI 800-556-7188

    At CFS our goal is to offer a gasket solution that provides the best form, fit and function to achieve its intended use. Silicone has exceptional resistance to temperature extremes and are often chosen due to their excellent resistance to chemicals, water, fire, fungal growth, ozone, heat and aging. Outstanding tensile strength, elongation, tear strength and compression set. The low temperature flexibility of silicone is unmatched by any other elastomer. Silicone is available in solid or sponge.

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  • San Fernando, CA 818-764-8222

    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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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.

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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