When replacing the clutch seal with the primary gear in place, such as doing a clutch seal in car, it is very important to use this installer tool. This tool includes a sleeve to protect the seal from getting cut or dity on the primary gear, and features a lip for setting the correct depth as well as a hole so you can use the flywheel bolt to actually install the seal. Don't risk it without this tool, as you will be doing the job again. 
 
Rental tools subject to rental agreement, see "rental tools" tab for more info. Tool must be returned  in 30 days. Return packaging and postage renter's responsibility. $59.99 deposit / $25.00 rental fee.