Park Tool ASC-1 Anti-Seize Compound is specially formulated to reduce friction and prevent seizing in threaded and press-fit bicycle applications. Designed for professional assembly and long-term serviceability, ASC-1 helps ensure easier installation and future removal of components while protecting against corrosion, galling, and rust under extreme conditions. Ideal for use on bottom bracket threads, pedal threads, pressed headset cups, seat posts, quill stems, and other high-contact interfaces. Features: Reduces friction during assembly Prevents seizing and galling of metal parts Protects against corrosion and rust Ideal for threaded and press-fit bicycle components Helps simplify future maintenance and disassembly Designed for extreme riding and weather conditions Recommended Applications: Bottom bracket threads Pedal threads Pressed headset cups Seat posts Quill stems Other threaded or press-fit interfaces Benefits: Easier component installation and removal Long-term corrosion protection Improved serviceability and maintenance Professional-grade assembly compound