Park Tool SAC-2 Carbon paste

The SAC-2 Park Tool assembly grease helps when installing two components with smooth surfaces against each other, creating more grip and everything stays in place. Ideal for carbon, aluminium and steel seatposts, handlebars and stems.

Note: This assembly grease contains hard pieces of Silica which gives it extra grip. This might also result in
superficial marks on your parts.
This SAC-2 is also not suitable for threaded parts or bearings.

During assembly, the tightening torque can be reduced by 30% due to the adhesion of the paste.

Can I use ordinary mounting paste on my carbon parts?
No, we do not recommend this! Carbon paste is made especially for carbon, which is more vulnerable to over-tightening. It provides extra friction without damaging the carbon, so the part stays tight and doesn't creak. Carbon paste ensures that you won't need to exceed the tightening torque, and that your parts remain fixed for a long time.

How do I use carbon paste?
Assembly grease should be applied to the component to be assembled and to the threads of bolts. If the component is made of carbon, then carbon paste should be used, otherwise ordinary assembly grease will do. You can apply it with a brush, directly from the tube or just with your fingers. In principle, you use carbon paste on all bolts with a thread and are most used on (carbon) stems and (carbon) seatposts. Re-apply when you have loosened a component. It is also advisable to loosen the parts once in a while, clean them and apply new paste.