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Rubber Seals

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

Rubber seals are used in many industrial, commercial and consumer settings. Many kinds of manufacturing equipment require use of rubber seals, especially in manufacturing processes that involve pressurized liquids or gasses. Read More…

Rubber Seals Rubber seals are natural or synthetic rubber products used to seal or fill gaps, insulate spaces from atmospheric conditions or water and protect surfaces from corrosion.
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Leading Manufacturers

Santa Fe Springs, CA  |  562-941-4800

RD Rubber Technology Corp is an ISO 9001:2015 certified company. We offer injection, LIM and transfer molding, rubber to metal bonding, engineering support, tooling design and more. Our customers rely on us to give them the best possible production solutions for rubber molding. From aerospace to medical, consumer products to military applications we build trust by being responsive to your needs.

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RD Rubber Technology Corporation $$$

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. $$$

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. $$$

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 $$$

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. $$$

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 $$$

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. $$$

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

Machinery that is sensitive to dust accumulation or environmental conditions may also be shielded by some variety of rubber sealant. Rubber seals are an essential component in aerospace and marine applications in which atmospheric stabilization is necessary. In consumer contexts, rubber seals can be found in garden hoses, swimming pool pump systems, kitchens, bathrooms, as insulation and weatherstripping and in many other applications.

A rubber seal can be a gel, film, putty or strip and will adhere to glass, ceramics, concrete, paper, bricks, other molded rubber materials, textiles, leather, metal, wood, plastic and many composite materials and porous surfaces.

Rubber is an elastometer and can be created from harvesting and processing natural latex; it can also be produced synthetically by processing certain hydrocarbons. Both natural and synthetic rubber must undergo a series of shaping and treatment processes in order to become useful rubber seals.

Rubber Seals Rubber Seals - National Rubber Corporation

There are several processes by which rubber can be shaped and strengthened. Rubber seals can be extruded, injection molded or subject to other thermoforming (heat forming) processes, though extrusion and injection molding are the most common methods. Extrusion involves forcing molten rubber through a die, which is a specially shaped hole in a metal plate. When molten rubber is forced through a die, it takes the shape of the die; this method is used to create long profiles, strips and channels.

In the context of rubber seals, extrusion is used primarily to create long, thin seals for moisture control purposes. Examples of extruded rubber seals include weatherstripping and rubber trim. Injection molding can produce more complex and specialized rubber seals. The injection molding process involves forcing molten rubber into a mold cavity that is shaped like the desired seal.

The rubber fills the mold and takes its shape, and upon emerging it cools, hardens and becomes a finished rubber seal. Non-extruded rubber sealants are used in contexts when a seal needs to fit into, around or between surfaces. Such sealants often are intended to be applied by end-users as liquids or gels that harden after a short time. Examples of applications for these varieties of sealant include caulking and waterproofing materials.

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