Rotary Seals

A reliable source for Hydraulic Seal information and leading Hydraulic Seal Companies & Manufacturers.

They provide bearing protection, lubricant retention, exclusion of contaminants and minimize or eliminate the leaking of fluids. They are able to perform well for long periods of time with a high rotating speed and in temperatures anywhere from -60°F to 200°F. Rotary seals perform even in poorly lubricated and dry conditions. Read More…

Rotary Seals Rotary seals are highly efficient lip seals that keep the components in rotating machinery and equipment working properly.

Leading Manufacturers

Sparta, NJ  |  973-383-2487

For over 20 years, it has been our dedication to service and outstanding product quality in all our hydraulic seals that have set us apart. We deliver high quality products every day, including o rings, metric seals, pneumatic seals, Teflon seals, and a whole lot more. We have sealing experts that can optimize each system performance with configurations that will solve your real issues. Contact us today to learn more!

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Allied Metrics Seals & Fasteners, Inc. $$$

Akron, OH  |  877-771-6766

We are not only technically knowledgeable about hydraulic seals, but we also have the hands-on experience to back it up. We have over 30 years of industry experience, and we can use that experience to benefit you. We have faced nearly every problem and know the right solution for most problems. We can offer both stock and custom seals to benefit you. We will always put the customer first, so contact us today!

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Premier Seals Manufacturing $$$

Cleveland, OH  |  800-860-6210

North American Seal & Supply distributes and fabricates a variety of seal and packing products: standard o-rings, metric o-rings, molded and extruded o-rings, gaskets, o-ring kits and more. We can help you find a unique solution to your application, so call us today or visit our website.

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North American Seal & Supply, Inc. $$$

West Jordan, UT  |  800-669-9638

At HydraPak, we make replacing your hydraulic seals easy, so you can get your seal repair jobs completed quickly, saving you time money. Even the most difficult seal repair challenges can be handled by our knowledgeable staff to get your equipment. We offer expertise in products for high-tech applications, as well as the ability to source everything from o-rings to sheet goods to sealing devices.

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HydraPak Seals, Inc. $$$

Chandler, AZ  |  480-892-7325

Our list of inventory has grown since our founding over 20 years ago. We started small, but now offer an extensive product list of hydraulic seals, o rings, and other rubber products. We take pride in what we do, and we inspect every product to ensure it meets our rigorous safety standards. Contact us today so we can get started finding the solution to your problem!

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Arizona Sealing Devices, Inc. $$$
placeholder image Allied Metrics Seals & Fasteners, Inc. Premier Seals Manufacturing North American Seal & Supply, Inc. HydraPak Seals, Inc. Arizona Sealing Devices, Inc.

Rotary seals provide a seal for oxygen, gases, water, other fluids, hydrocarbons and food materials. They are found in any machinery with a spinning component within the hydroelectric power, hot and cold steel rolling, chemical and petroleum processing, automotive manufacturing, food and pharmaceutical, machine tooling, pulp, paper and textile processing and hydraulic industries.

Rotary Seal Configurations Rotary Seals - Allied Metrics Seals & Fasteners

Gearboxes, marine propulsion systems, process mixers, tunnel boring machines, recreational vehicles and other machines and equipment use rotary seals, which, when used correctly, lengthen the system's lifespan and increase its durability. Some are made of metal or plastic materials, but the most popular material for rotary seals is Teflon, or PTFE.

This material is inert, meaning it will not react with most chemicals, and it performs well under high pressures and in vacuum environments. Some Teflon rotary seals are made specifically for food and beverage processing or pharmaceutical manufacturing applications and must meet strict FDA requirements. Most Teflon seals contain strengthening additives like graphite, bronze, glass and carbon.

Rotary seals have many different profiles, but they are usually round and shaped much link an o-ring. They are always symmetrical, meaning their cross sections are mirror images of each other. Because this type of seal is usually made out of Teflon, a material that cannot melt, they are all manufactured by the sintering process.

Sintering takes Teflon in powder form, places a dense amount in a rotary seal-shaped mold that is subjected to high heat in an industrial furnace for a certain length of time before being rapidly cooled. This forces the powder to adhere together and condense into a hard, black plastic or rubber-like product that is inert, resistant to most chemicals and substances and can withstand large amounts of pressure and even vacuum environments. While the primary function of seals in rotary applications is to retain the bearing lubricant, they also enhance the life and performance of the bearing by minimizing all dirt, oil and water ingress.

Rotary Seals Informational Video