Re: Used pumps
You can transfer milk accidentally through the tubing which would get into the motor, but only in small amounts if at all. I have purchased and sold several pumps both used and with new parts.
I personally would only buy a used pump like a Double Select, Pump In Style, etc with a seperate motor housing. Then you can replace the tubing and cones with new sterile ones and you don't really have to worry about it.
Kristi, Mommy to Josh & Nick (identical twins 6-97) Nathen (3-02), Joey (2-04), Jacob (11-05) & Aaron (12-11) I sell Tupperware!
"A person's a person, no matter how small..." Dr Seuss