I got the 17404 seal in last night. Even though it's spec'd for a 44.45mm shaft it still feels a bit tight on the spindle. I ran it for a bit and the spindle started getting warmer than I'm comfortable with. This seals are only rated for 3100 rpm and 100C anyway so it probably wasn't the best choice.

I did a little more research and found the SKF 45X65X8 CRW1 V. It's spec'd for a 45mm shaft, 10k rpm, and 200C. I'm pretty sure it will work. I ordered one this morning but it will be a week or so before it arrives.

https://www.skf.com/us/products/indu...5X8%20CRW1%20V