I checked back in the Bentley and it says to "coat flange surfaces with AMV
188 100 02".  So maybe this is not a sealer, but a thing grease or something?

At 09:26 PM 3/3/2005, you wrote:
>I plan to try to use the method described below.  But what about the
>O-ring?  Do you put sealer or oil, or nothing on it?
>Thanks,
>Edward
>
>At 04:21 PM 3/3/2005, you wrote:
>>I'm sure Ken's method would work great and it is a good idea to change you
>>coolant.
>>
>>But when the o-ring on my '86 GL gave out this winter I didn't have to clamp
>>off, cut or remove the coolant lines.  I simply took off the filter, double
>>nutted the shaft and then you can take the "box" out, replace the o-ring and
>>put it back together.
>>
>>Good luck,
>>Tom