This OEM seal seals the area where your clutch push rod enters the crankcase. South Dakota v. Wayfair, Inc. CALIFORNIA PROPOSITION 65. INTERNATIONAL GUIDELINES.
This Pushrod Seal has been good at keeping the oil in the engine! easy to install, keep it FLUSH, no further.
Works well in the TL1000R too. I use a soda straw to keep chain dirt from building up on the pushrod and tearing up the seal. ( just keep it SHORT enough to not touch the seal when clutch lever is pulled in.)