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Hydraulic Cylinder Seals

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

Hydraulic cylinders produce linear motion by using pressurized fluid. They vary in design, size and material according to the pressure and temperature requirements, but most hydraulic seals used in cylinders are shaped similar to o-rings but with a more complex profile. Read More…

Hydraulic Cylinder Seals Hydraulic cylinder seals are tools used to maintain pressure levels in hydraulic cylinders; they are crucial to the safety and efficiency of a functioning hydraulic cylinder.
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Leading Manufacturers

Sparta, NJ  |  973-383-2487

We provide a variety of seals but hydraulic seals are our specialty! Just a few of the hydraulic seals that we are able to offer include hydraulic cylinder seals, hydraulic rod seals, and hydraulic piston seals as well as many others! For over twenty years we have been dedicated to providing our customers with exceptional customer service. To learn more about what we may be able to do for you, visit our website today! We are ISO 9001:2015 certified.

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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.

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Premier Seals Manufacturing $$$

Lawrenceville, GA  |  877-432-4627

Since 1973, Daemar USA has been producing the best-quality hydraulic seals and o-rings on the market. We offer a wide variety of o-rings, including silicone, Teflon, EPDM, HSN-80, back-up, and Aflas o-rings. We also offer o-ring cord, quad rings, and o-ring packs. Our seal collection includes oil seals, axle seals, JM clipper seals, end caps, Teflon Energized seals, v-rings, and more. We are an ISO 9001 certified company, and we are eager to help you find the o-rings and seals that you need!

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Daemar USA $$$

Grand Rapids, MI  |  616-538-4970

Kent Rubber Supply has been a trusted supplier of hydraulic seals 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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Kent Rubber Supply Co. $$$

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.

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Arizona Sealing Devices, Inc. $$$
placeholder image Allied Metrics Seals & Fasteners, Inc. Premier Seals Manufacturing Daemar USA Kent Rubber Supply Co. Arizona Sealing Devices, Inc.

Hydraulic cylinder seals are made of a wide variety of materials, usually elastomers, including rubber, some plastics, Teflon and sometimes metal like iron. There are a few different parts in a cylinder that require seals. The piston and rod both use them to prevent leaking hydraulic fluid, keep outside particles from entering the cylinder, provide lubrication and eliminate any metal-to-metal contact of different cylinder parts.

Hydraulic Seal Model Hydraulic Cylinder Seals - Allied Metrics Seals & Fasteners

These seals are found within the automotive, aerospace, defense contracting, oil and gas, chemical processing, industrial machinery manufacturing, plastic molding, construction, agricultural, forestry and wind power industries, among others. Since all hydraulic cylinders contain multiple seals, they are components in machinery and vehicles like plastic injection molding machines and presses, commercial and military aircraft, cars, bulldozers, excavators, backhoes and turbines. Hydraulic cylinder seals must have low friction, resistance to water, oil and chemicals and be able to withstand extremely high pressures.

The hydraulic cylinder itself is usually composed of aluminum, steel, iron or bronze. It uses water or oil as the pressurized hydraulic fluid that produces energy. They power machinery that has very high force or multiple moving parts that operate simultaneously. Seals are located in the piston, on the cylinder head and on the rod. The piston seal prevents pressurized hydraulic fluid from flowing across the piston.

It is usually made of an elastomeric material. The seal located on the cylinder head prevents pressurized oil from leaking past the interface between the rod and the head, while the rod seal prevents leaking of hydraulic fluid to the outside and provides a degree of lubrication. Hydraulic cylinders also use wear rings, a type of seal that prevents any metal-to-metal contact, as well as rod wipers, which prevent contaminants from entering the cylinder when the extended rod reacts back into the cylinder.

Each seal is equally as important to maintain an efficient and safely operating hydraulic cylinder. Without seals, they would completely fail, causing the machinery to become unusable. While they last for long periods of time, regular maintenance checks to ensure the seals have not worn or aged will prevent seal failure.

Hydraulic Cylinder Seals Informational Video