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Our Complete range of products are Molded Rubber Parts, Rubber Bellows, Custom Rubber Injection, Rubber Grommet and Liquid Silicone Rubber Injection Molding.

Molded Rubber Parts

If you’re looking for an experienced molded rubber parts manufacturer, contact Jefferson Rubber Works, Inc. (JRW) JRW can provide you with rubber molding expertise and state-of-the-art rubber injection molding technology that ensures top quality molded rubber parts. By using applicable plastic technology, JRW can produce parts at a greater rate than other injection molding companies. Whether you need rubber caps, seals, mounts, bellows, or other molded rubber parts, Jefferson Rubber Works can take your part from prototype to finished product.

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Rubber Bellows

Jefferson Rubber produces rubber bellows and boots in many different configurations, sizes and materials to meet your most demanding needs. Our Bellows and Boots are utilized in applications requiring protection against dust, moisture, oils, chemicals, and UV, just to name a few. Molded Rubber Bellows Diaphram-Bellows-Neoprene Molded bellows and boots are versatile seals used in a wide range of applications to seal dust and other environmental elements in applications with a stroke or designed range of motion.. Each of these methods has certain attributes that would be relevant based on the criteria of the application. Bellows and boots produced in this manner can be made from a variety of materials, colors, and durometers. In addition, this process allows for a part with varying wall thicknesses, and other configurations not found in the other styles. Jefferson Rubber has a considerable amount of standard tooling available for bellows of this style, which afford you the ability to obtain an all rubber, seamless, bellows with no tooling cost.

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Custom Rubber Injection

Jefferson Rubber Works, Inc. (JRW) offers a one stop resource for all of your custom rubber injection molding company needs. Since 1975 JRW has manufactured custom molded rubber parts with unparalleled accuracy. Some other custom rubber injection molding companies use aging compression and transfer rubber molding methods. JRW’s state-of-the-art custom injection molding processes, the latest equipment, and a highly trained staff with years of rubber molding experience ensure that your parts meet your exacting requirements. Contact Jefferson Rubber Works and let us take your part from prototype to finished product.

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Rubber Grommet

Jefferson Runner is a supplier of rubber grommets which may be typically used to protect wire, hose, pipe or other objects passing through a panel hole. Rubber grommets are also employed as vibration dampers, finishing components and spacers. Rubber grommets can easily slide into a pre-drilled panel hole.rubber grommet supplier Jefferson Rubber offers a variety of standard rubber grommets and military rubber grommets. We manufacture custom grommets and other rubber components to your spec.. Rubber grommets are manufactured in a variety of rubber compounds including, silicone, Buna-N, Viton® Neoprene and EPDM. Our military rubber grommets meet the requirements of MS-35489 military regulations and range in a variety of inner diameters, outer diameters, and groove widths. Rubber grommet applications include motors, tools, cars trucks, trailers, appliances, electronic equipment and many others. Grommets are used to protect against the sharp edges caused by drilled holes. If you application is for air lines, rope, cable, wiring or tubing, rubber grommets is your solution.

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Liquid Silicone Rubber Injection Molding

Liquid silicone rubber injection molding is the most recent addition to Jefferson Rubber Works, Inc.’s molding operations. The faster cycle times and improved performance properties of liquid silicone rubber make it a good choice for a variety of molded components. Liquid silicone rubber (LSR) remains flexible and elastic beyond -70°F and retains its properties up to 450°F which makes liquid silicone rubber a good candidate for gaskets, seals, boots, bellows, medical devices and other applications where outdoor conditions are demanding. Cured liquid silicone rubber does not out-gas volatiles and plasticizers as other rubber compounds do – which has made it friendly to various assemblies that were formerly required to be ‘silicone free’.

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Thermoplastic Elastomers

Thermoplastic elastomers (”’TPE”’), sometimes referred to as ”’thermoplastic rubbers”’, are a class of copolymers or a physical mix of polymers (usually a plastic and a rubber) which consist of materials with both thermoplastic and elastomeric properties. While most elastomers are thermosets, thermoplastics are in contrast relatively easy to use in manufacturing, for example, by injection molding, which Jefferson Rubber Works does. Thermoplastic elastomers show both advantages typical of rubbery materials and plastic materials. The principal difference between thermoset elastomers and thermoplastic elastomers is the type of cross linking bond in their structures. In fact, cross linking is a critical structural factor which contributes to impart high elastic properties. The crosslink in thermoset polymers is a covalent bond created during the vulcanization process. On the other hand the crosslink in thermoplastic elastomer polymers is a weaker Intermolecular force orhydrogen bond or takes place in one of the phases of the material.

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  • Worcester, MA 01603 map, United States