O ring is needed. I got one a couple of months ago, locally, from a mechanic. I think he got it form local wholesaler "altrom".

I bet a pound to a penny you can get it at dealer

alistair

PS when installing other seal, de-burr the engine case a tad where the seal fit in.

On 2012-10-23, at 8:23 AM, JRodgers wrote:

> Got an oil leak on my 2.1 coming from under the pulley. Might be the oil
> pump, but I suspect a seal There is/was a large diameter "O" ring seal
> and a smaller seal - and the large "O" ring is for those engine with P/S
> and A/C. It seems this "O" ring is NLA. At least I cannot find any
> vendors that have it. Van-Cafe shows it on their website but they
> haven't been able to get it for some time.
> 
> Question is - is this large "O"ring necessary or is the smaller seal by
> itself sufficient to do the job. I have never had this apart before so
> am not quite sure what I will face when I tear into it, but I sure would
> like to have the correct and necessary parts on hand before I start.
> 
> Anyone have any ideas?
> 
> Thanks,
> 
> John Rodgers
> 88 GL Driver
> Birmingham