Air box (?) gasket

The black plastic housing that sits on top of the throttle body has a sealing ring on the inside that fits over the throttle body opening. It is covered in an orange coating (teflon?) which is flaking off and the raised ribbing is crushed. Has anyone managed to find a GM part number or an aftermarket replacement for this ring?

Thanks

NAPA has them. I have had one before but it came with a head gasket kit from Felpro.
Best bet is to call a NAPA if you don't have a NAPA by you at least you will find the name of what you need