Replacement O-Ring For A Dexter Vault Grease Cap And Replacement For AD2528E0 Grease Seal
Updated 01/27/2026 | Published 08/15/2024
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Question:
Hi I have a dexter 4.2K axle with the Vault maintenance free hub on my boatmate trailer. I found most of the parts to rebuild my hub but still miss somes. I need: - 2x Race L68110 Found OK - 2x Bearing L68149 Found OK - 1x Dexter Hybrid Oil tube Found OK - 1X Double lip grease seal not found heres the generic P/N for the seal Industry standard PN: 256-168-SP2-1 NOK Seal PN: AD2528EO -1x O-Ring 2.328 for the Dexter vault protector cap. Could you help me find the corresponding parts for the last 2 items ? Regards Frank
asked by: Frank
Expert Reply:
Hi Frank,
Everything I can find says the AD2528EO grease seal has a 1.68" inner diameter and 2.56" outer diameter so you would be able to swap it out with the Double Lip Seal for 3,700-lb Marine Hubs # 168255TB.
For the O-ring you'll need part # DX22CR.
Product Page this Question was Asked From
Replacement Trailer Hub Bearing - L68149
- Trailer Bearings Races Seals Caps
- Bearings
- Standard Bearings
- 1.38 Inch I.D.
- Bearing L68149
- Race L68111
- 3500 lbs Axle
- etrailer
more information >
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Gwendolyn Y.
1/27/2026
Hey Frank, how did the Double Lip Seal and O-ring work out for your Vault hub rebuild? Knowing what fit best could really help others working on similar Dexter axles.