I am in pain! I forgot my flanges at home.  I am going to run home at lunch to get them and home to have enough time left over to pump.  I live 20 minutes from work so that 40 minutes leaving me only 20 to pump once I get back.  Eek...there a lesson learned.                 
                             
        
Re: Forgot flanges at home!!
I've forgotten about everything (lids, adapter, flanges...) at least once. Sucks. Thankfully there is a store that sells parts nearby.
Now, though, I have a complete set of extra parts at work just in case.