Use Park Tool SAC-2 SuperGrip Carbon and Alloy Compound for secure grip between two slippery metal or carbon surfaces. Ideal for use with carbon, aluminum or steel seatposts, handlebars and stems.
Note – Assembly compounds hold by using grip aided by small bits of hard silica. This silica may cause minor cosmetic blemishing. Do not use SAC-2 on threaded parts or for bearing lubrication.