First a little background. Coming form the motorcycle world i know there are several websites that carry exploded views of all motorcycles, and every single OEM part, so you can order every nut, or bolt, or gasket or anything you like from the OEM.
Is there something like that for bicycles too?
I am looking for the rubber seal for the pedal bearings on my Trek Fx.
If there are no websites like this, is it all standard sized and i could find something at my LBS?