it was mentioned on here  about .........oh........... 5 or 6 months ago.
It was silk thread.

----- Original Message -----
From: "John Rodgers" <inua@CHARTER.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, August 25, 2011 9:13 PM
Subject: Re: Choosing a case sealer

>  Back in the day, when working in the aviation industry, engine cse
> halves were sealed with a thread laid down and stuck with some king of
> pucky. It may have been silk or cotton. It's been a long time ago and
> the details are fuzzy now. But the thread, when crushed when the case
> nuts are torques up, seal that case better than anything. I don't know
> if this worka with a Vanagon case, but it might be worth looking into.
>
> JOhn
>
> John Rodgers
> Clayartist and Moldmaker
> 88'GL VW Bus Driver
> Chelsea, AL
> Http://www.moldhaus.com
>
>
> On 8/25/2011 10:58 PM, Jim Arnott wrote:
>> On Aug 25, 2011, at 8:29 PM, Tom Lambas wrote:
>>
>>> Well now that I'm waiting for some new connecting rod nuts, maybe
>>> someone can help me decide between Permatex Aviation form-a-gasket
>>> (3H), or
>>> Permatex Super "300" form-a-gasket (83H) to seal the case halves.
>>
>> Loctite 515 or 518. Anaerobic gasket maker. Permatex is so.... old
>> school.
>>
>> Jim
>>
>>