Seals features "Push Fit" for each installation, unlike stock seals which are "Press Fit," often requiring special tools to remove and install Seals are pliable and can easily be installed with just the forefinger and thumb, making it problem free for the do-it-yourselfer Seals are made of a premium buna-n rubber compound The pressure balanced design affords a longer seal life and less seal drag compared to stock seals