This is a listing for the large red oring on the brew unit for both a CAV 610 (220 volt) and a CVA 615 (120 volts.)  This oring should be changed about every 500 cups or so to prevent leaking coffee into the machine. 

I have all the parts for a CVA 615  and some parts for a CVA 610.  I also have totally rebuilt 615 machines for sale.  See my 615 listing for details.  If you want a rebuilt 610 model contact me for more information. 

I will give you a trade-in for your non-functioning machine when you buy a rebuilt one from me.