This is what diaphragm type pumps are for .  No oil.
or Vegetable base oil lube  and a good oil separator for an extra caution.

OLD BOB


Peter wrote:
>
> As to breathing vacuum exhaust, don't ever. Not even with a dust filter. =
And
> compressor air is as bad or worse (suspended oil particles). You can get =
really
> hurt like that.
>
> -- Peter
>
>
>  =20

--=20
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