Ultra-Pure Light bearing oil

Ultra-Pure Light bearing oil is used to oil the rotating bearings on the top and bottom of rotary valves.

• Needle applicator for precision use
• Contents: 20 ml

Modern French horn rotary valves require three different grades of oil. From thickest to thinnest they are: bearing oil, linkage oil and rotor oil. Apply the first two each week, if you play regularly. When a valve become sluggish, drip a tiny quantity of rotor oil directly into the rotor casing, having first removed the valve slide to allow access.

For reference, a maintenance schedule recommended by the Rosehill workshop is included alongside the product image(s).