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Dart rear axle oil seal

Posted: Mon Jun 03, 2019 1:23 pm
by silverdart
I recently discovered a leak from the half shaft oil seal. The original seal was of the leather type which are now rare to find.
I purchased the DMG replacement which is the modern neoprene type.
The shaft diameter where the seal runs is 1.312in. The replacement seal I/D is 1.260in. ie. 0.052in. interference!
Your comments welcomed.

Dave.

Re: Dart rear axle oil seal

Posted: Mon Jun 03, 2019 5:26 pm
by bakergh
I purchased new remanufactured leather oil seals for my rear axle from

http://www.oilsealuk.co.uk

Johnathan Welch is extremely helpful even going to the lengths of having a batch of Salisbury 3ha half shaft oil seals made so that I could purchase two.

I re fitted leather oil seals as after investigation the leather seal has a larger sealing area than the modern neoprene seals so may well seal better on old half shafts.

Graham

Re: Dart rear axle oil seal

Posted: Mon Jun 03, 2019 9:38 pm
by A.N.Other
I would guess that the seal material would determine how tight it can be. If it is soft and flexible then I don’t think it would be a problem as the oil should be able to lubricate the contact area as the shaft rotates. That said it doesn’t want to be like a bag of bogeys allowing oil to seep through.

Re: Dart rear axle oil seal

Posted: Tue Jun 04, 2019 9:11 am
by silverdart
Hi Graham, That's good to know.
Thanks for the info.

Dave.