The seal is not available separately from the sump. There are generic seals available on Amazon, but they are taller than the OEM seal. I figured this would displace the diverter valve disc, so I didn't want to chance it. Replacing the sump was easy enough, I didn't even watch any videos. The only thing to watch our for is there are two crimp-style hose clamps that join the main pump to the sump. I was able to pry these open and re-use them. I re-crimped them with pincher pliers and dikes. Also, during reassembly I used Magic Lube on all gaskets to help assembly and ensure no leaks.