Rather than keep you guys waiting, I'm more than happy to run a batch of Aluminium Labryinth type seals and fit them at No Extra Charge. Usually £22 extra or £62 +P&P per set when sold on own.
These are well proven and have the added bonus of lasting virtually forever as there are no touching parts. Over the years I've probably sold in excess of 70x sets.
So, if you don't want to wait any longer for your crank just send me a PM and I'll put you on the URGENT list.
There's a little Viton O-Ring that fits into the groove on the OD. More than anything it just prevents the seal from spinning/moving.
