That's just an O-ring Jerry.   Check with your dealer or FLAPS.

The dealer in Bellingham stocks the part & the seal.

On 6/22/07, Gerald Masar <azsun99@earthlink.net> wrote:
>
> Working on my '88 Westy AT cooling system, I have removed this fitting,
> which is the
> original plastic one. The small hose that attaches to it was leaking but I
> don't think
> the fitting was. On close exam I do see a hairline crack on the inside,
> near the
> opening. This fitting has a groove in it and used a round seal. I have a
> metal fitting
> from some long ago repair on my '90, and it appears to be in good
> condition, but I do
> not have a gasket.
> I would like to finish this up this weekend.
> Would "The Right Stuff" gasket maker work in this situation??
> Jerry
>

--
Jake
1984 Vanagon GL
1986 Westy Weekender "Dixie"
www.crescentbeachguitar.com