Hi, this is Jerica from InSinkErator® Customer Service. The replacement sink baffle or mounting gasket for your Badger 900 disposer is the standard mounting gasket included in the InSinkErator Mounting Gasket Kit (MGK-00). The Mounting Gasket Kit includes one standard and one deluxe mounting gasket. These gaskets are properly labeled. To ensure proper installation, please make sure to use the appropriate gasket for your disposer. I have included a link below for your reference. Also, please be reminded that the disposer should be uninstalled when replacing its mounting gasket. For more inquiries, please do not hesitate to contact us through insinkeratorfeedback@emerson.com or call InSinkErator AnswerLine at 1 (800) 558-5700. Thank you.
InSinkErator Mounting Gasket Kit:
http://shop.insinkerator.com/p/insi...