Sierra 18-2062 Oil Seal - Replaces OMC 329923

The Sierra 18-2062 is a precision oil seal built to the OMC 329923 specification, used to retain lubricant and keep out water and debris at a rotating shaft interface. It is manufactured with a machined exterior finish for a consistent, reliable sealing surface at the housing bore.

This seal is sized with a 1.375 inch outer diameter, a 0.875 inch shaft size, and a 0.207 inch width, matching the dimensions of the original OMC 329923 seal it replaces. Because it is built to the OEM 329923 specification, it installs as a direct, drop-in replacement without modification. At 0.02 pounds, it is a small, lightweight component intended for straightforward replacement during routine maintenance or seal repair.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2062
• OEM Cross-Reference: OMC 329923
• Outer Diameter: 1.375 inches
• Shaft Size: 0.875 inches
• Width: 0.207 inches
• Exterior Finish: Machined
• Weight: 0.02 pounds

Replaces (OEM)

• OMC 329923

Frequently Asked Questions

What does the Sierra 18-2062 oil seal replace? OMC 329923 is the OEM number the Sierra 18-2062 oil seal replaces.

What are the dimensions of this oil seal? The 18-2062 measures 1.375 inches outer diameter, 0.875 inch shaft size, and 0.207 inch width.

How much does the 18-2062 weigh? 0.02 pounds is the weight of the Sierra 18-2062 oil seal.

What is the exterior finish on this seal? Machined is the exterior finish on the Sierra 18-2062 oil seal.

Is this a genuine Sierra part or a generic copy? The 18-2062 is a genuine Sierra International oil seal, built to the OMC 329923 specification rather than a generic aftermarket copy.

What shaft size does this seal fit? 0.875 inch is the shaft size the Sierra 18-2062 oil seal is designed to fit.

Can this seal be used anywhere OMC 329923 was originally installed? Any application originally fitted with OMC 329923 can use the Sierra 18-2062 as a direct replacement.

What comes in the box with this order? One Sierra 18-2062 oil seal ships per order, ready for direct installation.

How does this seal differ from a generic oil seal? Unlike unbranded seals, the Sierra 18-2062 is manufactured to match the OMC 329923 OEM specification exactly, so the outer diameter, shaft size, and width are correct for the application.

What is the outer diameter of the 18-2062 seal? 1.375 inches is the outer diameter (OD) of the Sierra 18-2062 oil seal.