This item is the distinctively shaped twin hole top pushrod rubber seal that was fitted to all OHV 1938-47 models. This OHV model is easily identified because it had a seperate front rockerbox cover, which had a special cutout area to take this rubber seal - and which both pushrod tubes fed through. the later and more common 1948-56 OHV engine design dispensed with the this method of sealing the top pushrod tubes - so the original rubber seals are now extremely difficult to find - and normally original seals are ripped, soggy and ineffective.
If you look at the accompanyning photographs, you will see how these seals are fitted.
This engine, although less frequently seen than the later 1948 onwards OHV design, is close to my heart - as I owned and raced a number of bikes fitted with this engine type in the early 1980's - and I spent a lot of time scouring through old box's of gaskets at autojumbles trying to find this particular rubber seal! Therefore, I am very pleased to now be able to offer this seal - manufactured from a high quality oil resistent nitrile rubber.
To make it - we had our rubber manufacturer make moulds from what is possibly the only original Norton 'New Old Stock' example of this seal still surviving - it coming from an original engine gasket set I have held back from my collecting days in the 1980's.
This seal may be slightly more expensive than other similar seals for other makes and models - but that reflects that we have had to have moulds made and this seal is only manufactured in smaller quantities. Price is Each.
Update Dec 2021:As a final point on this 1938-47 OHV engine type - we may be manufacturing a batch of the distinctive pushrods (with pushrod adjusters), and possibly the timing case cam followers - both of which have a habit of wearing out and snapping (in the case of the followers) in the near future, email us at sales@racingvincent.co.uk if you wish to go on our Wanted list for these. And in case you have looked at the photos - and are wondering why the cylinder head in the photo looks silver - the 1938-47 OHV models were only ever listed with cast iron cylinder head, this is actually a Works alloy cylinder head I acquired 40 years ago, which I believe was made for an ISDT engine . . . one day I should rebuild that engine!
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