Product review (1 stars): Garbage
Horrible design, waste of $40, tossed it after an hour fighting it to install it, bought another seal in stead (link below) which was cheaper, easier to install, and worked much better.

https://www.amazon.com/gp/product/B00NL4A53Y/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1