Reliable Bearings Wheel Seal 1.986 Inch, Trailer Hub and Bearing Grease Seal, SL-123

The Reliable Bearings SL-123 is a wheel seal sized 1.986 inches, designed to retain grease and keep out water, dirt, and road debris in trailer hub and bearing assemblies. It is built for use in trailer hub and bearing applications, where a reliable seal at the hub is essential to keeping the wheel bearings properly lubricated and protected during towing.

Wheel seals like the SL-123 sit at the inner end of the hub, forming a barrier between the bearing grease cavity and the outside environment. A properly sized and installed seal helps prevent premature bearing wear and failure caused by water intrusion or grease loss, which is a common cause of roadside breakdowns on boat trailers and utility trailers alike. The 1.986 inch nominal size refers to the seal's dimension, so it should be matched against the hub bore and spindle it will be installed on before ordering.

This seal is sold as a standalone replacement part, allowing trailer owners and repair shops to replace a worn or leaking seal without purchasing a full hub kit.

Specifications

• Brand: Reliable Bearings
• Manufacturer Part Number: SL-123
• Product Category: Trailer Hubs and Bearings
• Nominal Size: 1.986 inches
• Weight: 1 pound

Frequently Asked Questions

What is the Reliable Bearings SL-123 wheel seal used for? The SL-123 is a wheel seal used in trailer hub and bearing assemblies to retain grease and keep contaminants out of the bearing cavity.

What size is the SL-123 wheel seal? This seal has a nominal size of 1.986 inches, which should be checked against your hub's bore dimension before purchase.

How much does the SL-123 wheel seal weigh? The Reliable Bearings SL-123 weighs 1 pound.

What brand makes the SL-123 wheel seal? The SL-123 is manufactured by Reliable Bearings.

Is the SL-123 sold as a single seal or as a kit? The SL-123 is sold as a standalone wheel seal, not as part of a bundled hub kit.

Where does a wheel seal like the SL-123 install on a trailer hub? A wheel seal sits at the inner end of the trailer hub, sealing the grease cavity that surrounds the wheel bearings.

Why would I need to replace a wheel seal such as the SL-123? A wheel seal like the SL-123 is typically replaced when the original seal is leaking grease or has hardened and cracked, which can allow water into the bearing cavity.

Does the SL-123 fit any trailer hub? The SL-123's fit depends on matching its 1.986 inch nominal size to your specific trailer hub bore, so confirm the dimension before installing it.

What happens if a trailer wheel seal fails? If a wheel seal such as the SL-123 fails, grease can leak out and water can enter the hub, leading to accelerated bearing wear or bearing failure.

Is the Reliable Bearings SL-123 a category for boat trailers? The SL-123 falls under the Trailer Hubs and Bearings category and is suited to trailer hub applications generally.