Threadlockers lock threaded assemblies and keeps them from loosening
Park Tool TR-1 Threadlocker 
Medium Strength Threadlocker (Competes with Loctite® 242/243)
Compatible with steel, aluminum and carbon fiber
Oil tolerant
Not recommended for titanium fasteners
Notice: Park Tool AP-1 Adhesive Primer must be used to prep all components, fasteners and carbon fiber surfaces prior to application of Park Tool threadlockers or retaining compound. Failure to do so could result in permanently bonded parts
10 ml bottle