Having spent 40 years in the aerospace hydraulics R&D labs we use teflon
pipe tape on alum. pipe threads. The trick is to make sure the threads are
clean and dry. Avoid putting the teflon tape on the lead in threads. Start
up about 2 threads for a good seal. 1 & 1/2 wrap is enough to seal. Don't
over torque. Just check after each run to assure they are still tight and
not leaking. After removing be sure to clean out any tape left in the female
threads. a dental pick from Harbor FGT is good for this. MAke sure you wrap
in the opposite direction so the tape doesn't peal during installation.
Glen
----- Original Message -----
From: "Albaugh, Neil" <albaugh_neil@ti.com>
To: "'Tom Neimeyer'" <tneimeyer@houston.rr.com>; "'Land Speed List'"
<land-speed@autox.team.net>
Sent: Tuesday, March 18, 2003 8:11 AM
Subject: RE: Threaded Fittings
> Tom;
>
> I'd use those blue anodized aluminum fittings; you can get them from
Earl's.
> My experience with Russell has been disappointing-- their Quality Control
> people must take lots of coffee breaks. I usually use Loctite Hydraulic
> Sealant on pipe threads for vibration locking and leak sealing.
>
> Stainless steel/aluminum will gall and sieze unless a good anti-sieze is
> used on the threads but the safest thing is to avoid that combination
> altogether.
>
> Regards, Neil Tucson, AZ
>
>
> -----Original Message-----
> From: Tom Neimeyer [mailto:tneimeyer@houston.rr.com]
> Sent: Monday, March 17, 2003 8:54 PM
> To: Land Speed List
> Subject: Threaded Fittings
>
>
> List,
> I'm doing some plumbing on the motorcycle and was wondering what is the
> best type (material) of fittings to use to avoid galling. I hope that
made
> sense. The motorcycle case is aluminum, threaded with 3/8 NPT. Should I
> use aluminum fittings, brass, steel or stainless? What is the best thread
> sealant? Should I use anti-seize instead of sealant? Just looking for
your
> thoughts and experiences.
>
> Regards, Tom
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