Clutch Slave Cylinder Seal - which one?

[schueymcfee]

My seal has gone on the slave cylinder - I ordered one for an SD1 thinking they'd be the same - nope!

The SD1 seal is smaller - so I've gone to the dealers but they reckon there's two, a small one and an inch wide one?

Mine is a 1993 car, anybody any ideas of part numbers or which one I need - they're telling me depending which it is I may need a whole new cylinder and therefore they need the boresize of the cylinder! :(

[schueymcfee]

Well, 'tis a bit of an emergency so have gone for new cylinder seeing as they're only 20 odd quid more than the repair kit and will last longer than the quoted 5 mins of the repair kit!