Synthetic rubber is the most common material used for oil seal construction. Teflon in particular is valued as an oil seal material because of its properties of chemical and corrosion resistance, elasticity, temperature resistance and its strength. Read More…
Leading Manufacturers
Allied Metrics Seals & Fasteners, Inc.
Naples, FL | 973-383-2487We 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.

Gallagher Fluid Seals, Inc.
King of Prussia, PA | 800-822-4063Gallagher Fluid Seals offers an extensive line of hydraulic seals and pneumatic seals from many name-brand manufacturers. Our inventory includes o-ring seals, Teflon® seals, hydraulic packings, pneumatic packings, symmetrical seals, rod seals, piston seals, cup seals and many other products. With more than 50 years of industry experience, Gallagher's products and service offerings are second to none.

Hercules OEM
Winston-Salem, NC | 800-626-8807Hercules OEM is a supplier and distributor of sealing products, including O-Rings, Custom molded rubber components, gaskets, seals, and rubber-to-metal bonded components. Not only do we provide superior products, but we also offer design consulting, coatings, packaging, delivery, and inventory support. Our commitment to quality, innovation, and customer satisfaction make us a preferred choice for companies looking for o-rings and hydraulic seals.

Kent Rubber Supply Co.
Grand Rapids, MI | 616-538-4970Kent 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.

Arizona Sealing Devices, Inc.
Chandler, AZ | 480-892-7325Our 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.

Metric oil seals are non-metallic rings that are used to prevent leakage of liquids in hydraulic systems; they are used primarily in countries that do not use the American system of measurement. Hydraulic systems are machines that use pressurized hydraulic fluids to facilitate the movement of equipment.
Bulldozer shovels, for example, are moved by hydraulic cylinders filled with pressurized hydraulic fluid. That fluid is transmitted throughout transmission lines and cylinders. This movement of the fluid forces pistons and other similar equipment back and forth; the equipment connected to the pistons moves as a result. Oil seals, which are sometimes also known as hydraulic cylinder seals, are necessary to help prevent contamination of hydraulic systems. They are also used to help maintain fluid pressure in those systems.
Hydraulic cylinders and fluid transmission lines must be carefully controlled in order to ensure that the entire system performs as it should. Contaminants and poor seals in a hydraulic system can cause inefficiency in that system and sometimes failure. Total and even partial failure of hydraulic systems, particularly in cases when those systems are applied in load bearing or lifting capacities, poses a very severe hazard to nearby people and objects.
For example, if an earth mover's hydraulic cylinder failed while lifting a large amount of dirt, the rapid and unexpected descent of the equipment could cause serious damage to anything in its falling path. Also, the impact could cause damage to the rest of the equipment, which could derail whatever project in which it was involved.
Properly installed and maintained oil seals help reduce the chances of hydraulic system failure. Metric oil seals and American oil seals are both important parts of all kinds of industrial, commercial and consumer utilities. Carefully pairing them with their applications is important ensuring the sustained effectiveness of the machinery in which they are used.