How to Measure to Determine the Correct Grease Seal for a Trailer Spindle

Question:

Will AD2527EO seal with O.D. 2.332 fit a hub which has a AF2527E seal with a O.D 2.312. The OD. 2.312 was measured with a home ruler and may not be accurate.

Expert Reply:

The # 168233 Double Lip Grease Seal has an outside diameter of 2.332 inches and an inside diameter of 1.688 inches. This seal is not compatible with a AF2527E seal with a O.D 2.312, because, even though the O.D. id very close, the inner diameter of the is seal is 1.750 inches and would not be the correct fit for the spindle diameter.

You will need to take an accurate measurement of the outside diameter of your existing seal, or the inside diameter of the mounting surface for the seal in the hub. You will also need an accurate measurement of the spindle at the seal surface. I have posted a photo to show the dimensions you will need to measure. A dial caliper will provide an accurate measurement to determine the correct seal for your hub and spindle.

It sounds like you may need the 10-42 Seal with 1.75 inch inner diameter and 2.33 inch outer diameter, if you have a 2,800 lb Dexter axle.

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expert reply by:
Robert G

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