[Darren69]

You used to be able to get new seals from Ducati for that type but tbh they were never great anyway and always leak after a short time. The ones from a later bike will probably fit, I think they only improved the slave design and the mounting is the same, you'll also probably benefit from a braided steel clutch line too. They show up on ebay quite a lot and there are also plenty of better aftermarket ones.

Its probably worth looking at replacing the brake lines too if they are original rubber type still!