Fluid Compatibility: Exceptional for utilization with alcohol and aromatic fuels and highly resilient against ultraviolet light and ozone exposure.

PolyEther Ether Ketone (PEEK)

Attributes: PEEK exhibits outstanding strength, fatigue resistance, and stability in elevated temperature conditions, boasting a melting point approximately at 343°C, and displaying very commendable chemical resistance.

Temperature Range: The recommended operating temperature for PolyEther Ether Ketone (PEEK) spans from -54°C to +260°C.

Fluid Compatibility: PEEK demonstrates compatibility with nearly all solvents utilized in HPLC applications.

Hydrogenated Nitrile Butadiene Rubber (HNBR)

Attributes: Hydrogenated Nitrile, also known as saturated Nitrile, showcases excellent resistance to many contemporary fuels, high energy radiation, and boasts good abrasion resistance.

Temperature Range: The temperature spectrum for Hydrogenated Nitrile Butadiene Rubber (HNBR) ranges from -40°C to +150°C.

Fluid Compatibility: HNBR finds extensive usage in automotive and oil industries, maintaining outstanding resistance to motor oils, sour gas, amine/oil mixtures, oxidized fuels, and lubricating oils. 

Ultra high molecular-weight polyethylene (UHMWPE)

Attributes: UHMWPE (Ultra High Molecular Weight Polyethylene) features extraordinarily long molecular chains that facilitate more effective load transfer, enhancing intermolecular interactions. This results in an exceedingly resilient material, boasting the highest impact strength among all thermoplastics currently available. It demonstrates very high abrasion resistance, zero water absorption, self-lubrication, and a friction coefficient only marginally above most filled PTFE.

Temperature Range: The recommended operating range for Ultra high molecular-weight polyethylene (UHMWPE) spans from -200°C up to just +80°C.

Fluid Compatibility: UHMWPE maintains stability across all hydraulic fluids, showcasing high resistance to acids, bases, and aggressive media.

Selecting the appropriate seal material is pivotal in ensuring the efficient and safe operation of machinery, devices, and systems. Unsure about your specific needs? Reach out to our knowledgeable team here at Car Lift Repair Orlando Seals, who will discuss your requirements based on your application and assist you in finding the ideal seal for your needs.

Hydraulic cylinders are frequently utilized in various industrial machinery. Comprising an actuator, they harness hydrostatic energy to generate force. Essentially, hydraulic cylinders utilize fluid to produce either a pulling or pushing force. However, due to their fluid-containing nature, they necessitate the use of seals. Seals are commonly present within hydraulic cylinders. But what exactly are hydraulic seals?

An Overview of Hydraulic Seals

Seals are ring-shaped components akin to gaskets, meticulously designed to seal the spaces between various components within a hydraulic cylinder. Since hydraulic cylinders encompass numerous components, some of which come into contact with the fluid, seals are employed to prevent fluid leakage around these components. Hydraulic seals are meticulously crafted to snugly fit the components within a hydraulic cylinder while establishing a watertight seal around them.

Essentially, seals resemble O-rings but are distinguished by a groove within their lip, facilitating a precise fit with the components they seal. This groove smoothly envelops the component to establish a leak-proof seal. Even when the piston of the hydraulic cylinder moves, pressurizing its fluid, the component remains impervious to leakage. The seal effectively retains the fluid within its designated container, preventing any seepage around the component.

Static vs. Dynamic Seals

Seals are categorized as either static or dynamic, contingent upon their intended application. Static seals find their use in applications where the associated component remains stationary. While static seals are subjected to pressure, they remain unaffected by movement.

In contrast, dynamic seals encounter movement. Rod seals represent a prevalent type of dynamic hydraulic seal. Hydraulic cylinders feature a piston rod that undergoes movement during operation. Rod seals are purposefully engineered to seal these piston rods. They are classified as dynamic seals since Car Lift Repair Orlando piston rods experience motion. Nevertheless, both static and dynamic hydraulic seals find application in hydraulic cylinders. The differentiating factor lies in the fact that static seals remain fixed, while dynamic seals contend with motion.

Materials Used in Hydraulic Seals

Hydraulic seals are available in various materials. Rubber stands out as a widely used material for hydraulic seals. Rubber Car Lift Repair Orlando hydraulic seals possess elasticity, crack resistance, and enduring durability. Additionally, there are polyurethane hydraulic seals, which share many characteristics with rubber seals but are typically stronger and more resistant to wear. Although not as prevalent as rubber or polyurethane, some hydraulic seals are crafted from polytetrafluoroethylene (PTFE). PTFE, a synthetic material, offers flexibility, strength, and resilience to extreme temperatures.

Choosing the appropriate Car Lift Repair Orlando seals is a critical aspect of designing your hydraulic cylinder. The proper selection of seals significantly impacts the performance and durability of the cylinder.


Car Lift Repair Orlando’s proficiency in hydraulic cylinders guarantees the provision of cylinders tailored to the specific requirements of your application. Car Lift Repair Orlando’s engineering team collaborates with your company’s experts to thoroughly comprehend the operational needs of your cylinder.


Six key considerations for seal selection include:


1. Pressure Rating

It is essential to select hydraulic seals tailored to the operating pressure and potential pressure fluctuations. The right seals will effectively maintain pressure and help prevent damage or leakage.


2. Single or Double-Acting

Car Lift Repair Orlando Single-acting seals are intended for cylinders where pressure is applied from one side only, while double-acting seals are utilized in cylinders where pressure is applied on both sides. The arrangement and type of seals on the piston play a role in ensuring optimal cylinder performance.


3. Operating Temperature

The environmental conditions in which the Car Lift Repair Orlando cylinder operates can influence the material selection for your seals. Factors to consider include the temperature during cylinder startup and at peak operation. Cylinder seals can be optimized for temperatures ranging from -40 degrees C/-40 degrees F to 200 degrees C/392 degrees F. Certain industrial settings such as steel mills, plastic injection molding, and paint lines may necessitate seals capable of withstanding even higher temperatures.


4. Medium Utilized

The most commonly used medium is petroleum-based oil, but other fluids include water-based hydraulic fluids like water-glycol, bio-based oils such as vegetable oils, and petroleum-based oils with fire suppression additives.


5. Velocity

The response of seals within the cylinder can be influenced by the operating velocity of the piston rod during stroking. Slower cylinders may experience “seal stick,” while reduced friction seals enhance slipperiness and smooth functionality.