Does anyone know where I can order parts for my petmate purrforma cat litter box?

Question

Petmate doesn't sell broken parts. just bags and liners

Answer 1

You can contact them via their webpage:
http://www.petmate.com/Catalog.plx?ID=1678

P.S. in reply to your additional comment:
On their page, yes. But have you tried contacting them via their "contact us" link? I've never dealt with this particular company, but most offer parts, or at least tell you who does. They want happy customers, after all. :)