This Oil is a 100% synthetic, highly concentrated lubricant without any solvents that could damage the seals of your marker. It is perfectly suitable for the use in high end markers. All o-rings and gaskets are safely coated with a lubricating film. This film won't tear, even at the highest rate of fire. It prevents wear and increases the durability of the marker. Compared to other oils, Pro Lube has a distinctively lesser tendency to change viscosity due to changes of temperature. With the atomising spray head even the most difficult to access spots are easily reached.