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General Category => General Discussion => Topic started by: theoneandonlymin on November 10, 2025, 07:54:20 AM

Title: Rear oil seal crankshaft
Post by: theoneandonlymin on November 10, 2025, 07:54:20 AM

I'm throwing a new seal at my NorgeGT whilst I am peplacing the clutch.

It is a 53 68 10/8

This is all I've found.

Oil seal W53-68-10/8 BA, 53x68x10 mm | Tuli-shop.com https://share.google/wZ3kgry0LFHRvSL5L

Are there other alternatives

Thanks

Title: Re: Rear oil seal crankshaft
Post by: Antietam Classic Cycle on November 10, 2025, 08:02:18 AM

https://www.gutsibits.co.uk/pr/TheShop/index.php?q=90405367&f=d&Model=0&search=SEARCH
https://www.stein-dinse.com/en/item-2-1301488-90405367-.html

Title: Re: Rear oil seal crankshaft
Post by: theoneandonlymin on November 10, 2025, 09:22:21 AM

Thanks, the Gutsibits one is a straight 10, same as my V1000G5,  which is a generic seal. Stein is a 10/8 . May have to pay the extra € to have the correct one.

Title: Re: Rear oil seal crankshaft
Post by: turboguzzi on November 10, 2025, 10:07:43 AM

there is nothing sacred about these seals, all are std sizes you can find in hydraulic/bearing shops.

The one thing id insist is on a Viton seal rather than "eco" NBR

Title: Re: Rear oil seal crankshaft
Post by: n3303j on November 10, 2025, 03:52:25 PM

I kind of like the idea of the Viton with the unidirectional ribbing that helps direct oil flow back into the case (ribbed for ......).
Such a pain to get at these that I always look for the absolute best. I'll easily get 50K+ miles out of a clutch. Usually the splines start binding. Never wore the friction material off one. So I want the rear main seal to outlast the clutch.

Title: Re: Rear oil seal crankshaft
Post by: theoneandonlymin on November 12, 2025, 01:43:32 PM

So it seems  the 53 68 10/8  is the recommended replacement.

Given that most other models use a 53 68 10 oil seal it could be an upgrade for those models.

Gutsibits list the 53 68 10 as suitable for all models inc Norge  and Stelvio.