Silicone grease is used to lubricate pistons and form seals for eyedroppers.
- If filling mechanism can be isolated safely, use a q-tip and apply modestly on the rubber rim of the piston.
- If filling mechanism can not be isolated safely or requires a special tool (Lamy 2000, Montblanc 146/149, Visconti power fillers) then apply a moderate amount on the inner wall of the pen. Then, operate the piston immediately to apply the grease onto the piston.
- Use a q-tip and apply generously to the screw threads connecting the barrel and section of the pen. Be careful not to apply any onto the feed. Wipe off the excess.