Impeller seals close off the open end of your impeller shaft after installing an impeller. Each seal is fit-specific to a set of Solas impellers. The SL007 impeller seal is designed for use with the following impellers: Sea-Doo SD Super Camber (ABC Series)/Super Camber (IJK Series), SD/SF/ST Concord Series, ST Dynafly Series, Yamaha YRS, YQ Concord Series, and Kawasaki KH Dynafly Series.