This is the 2nd order I place on Amazon for a new canner seal.  The first one did not fit properly...it was way too small.  This one is just right.  In reading through the reviews on several of the canner seals offered for sale, I would recommend measuring the diameter of your canner lid to know which size seal to order.  I do NOT recommend using the canner model number or canner size as a good way to judge the correct seal to order.  Hope this helps someone avoid ordering the wrong size in the future!