Dear Mike,

Thanks for your reply, I need to fill oil in gear box. I have the users
manual, in which they have said Fomblin or PFPE oil, but they have not
described the grade. I wanted to know can I fill Fomblin 6/6 or Fomblin 14/6
 in gear box?
 I am also trying to get the exact grade from OEM, but if you know,
can you please let me know.

Ashwini.

On Mon, May 11, 2009 at 7:51 PM, Mike Stan  wrote:
> Dear Ashwini,
>
> I would recommend that you check with the manufacturer
> (Oerlikon/Leybold) before you make any changes.  The DryVac series are
> oil-less pumps, meaning that the main exchange chamber is dry sealed.
> The bearing chambers, there are two, are typically lubricated with a
> Fomblin or similar type PFPE oil.  I would check with Leybold to make
> sure which chamber requires which lubricant.  One requires oil and one
> requires grease.  I really don't recall which gets which.  I'm sure that
> the manufacturer can send you a users manual.
>
> Good Luck!
> Mike