dishwasher leaked from left side of door

As I pulled out the old rubber gasket I noticed there was a flat side and a curved side, this is how the new one must go. When I put in the new gasket in I just made sure the flat side (faced out) and it really was very simple. It just fits inside a grove, very easy to install. I compared the to parts (old and new) they were exactly the same shape and length.
I was very impressed with the web site navigation and layout. I was able to zoom in on pictures of the part and there were exact measurements of dimensions.