Oil seals - often called grease, fluid or dirt seals - are vital components in practically every type of vehicle in operation. They protect all types of bearings, helping retain lubricants and liquids, exclude contaminants and separate dissimilar fluids or gases.

Timken's heavy-duty oil seals are designed to last and allow for less than perfect operating conditions. Our seals include rubber ribs that cover the entire axle shoulder, sealing around grooves and nicks. The seal's running surface is also even and flexible, allowing the seal to move from side to side when needed.

Large vent holes in our heavy-duty seals let lube flow to and from seal, removing heat build-up. With a reinforced outer case that significantly reduces the risk of installation damage, our seals run close to the axle, shortening the distance per revolution and reducing wear.

Design Attributes

• Excellent static anti-seep capabilities for intermodal applications and extended storage periods.
• Multi-point internal contamination exclusion system to prevent seal lip damage.
• Reinforced steel casing provides structural strength.

Applications

• Heavy-duty and over-the-road equipment

With the widest axle shoulder coverage currently available in the industry, our seals effectively cover minor axle shoulder imperfections with a molded nitrile surface. And, an oversized outside diameter provides a secure fit and prevents the seal from spinning or walking in the hub bore in cold conditions.

Timken heavy-duty seals do not significantly degrade with age. Able to withstand up to three PSI internal hub pressure build-up caused by clogged vents, our seals offer excellent temperature capabilities ranging from -20°F to 225°F (-24°C 106°C). In addition, their metal-to-metal contact promotes heat transfer away from seal.

Performing well with all recognized wheel bearing oils and greases, Timken seals have large vent holes that allow the lubricant to flow around seal lip, providing lubrication for the main seal lip for longer life. They also assist in cooling seal components.

Finally, our seals provide a robust tool impact point that is designed to help ensure damage-free installation. And, our installation tools are easy to use and assure superior installation of hub seals.

Materials

Timken heavy-duty seals are available in felt, urethane, nitrile, polyacrylate, ethylene-acrylic or polyacrylic (Vamac®), silicone, fluoro-elastomer, tetrafluoro-ethylene propylene (Aflas®) and PTFE.
 
Note: A seal's operating environment should be determined before selecting the sealing element or lip material. (Consult the Timken Seal Specification Guide for tables and listings.) 
 
Sizes

Timken heavy-duty seals are available for a complete range of heavy-duty, off-highway applications. 

Vamac® is a registered trademark of E.I. Dupont. 

Aflas® is a registered trademark of the 3M Company.