Detail 01
Thicker than Ultra-Pure Professional Valve Oil
Its viscosity is intended for rotary-valve bearings and worn piston-valve applications.

Independent shopping perspective
Ultra-Pure Light Bearing Oil is a synthetic lubricant for the rotating bearings above and below rotary valves. Its heavier consistency than Ultra-Pure Professional Valve Oil is intended to lubricate those bearing points. It also addresses piston valves that are worn or missing plating: the thicker oil fills the space between piston and casing to improve the valve seal. The formula is non-toxic, odorless, and long-lasting.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Its viscosity is intended for rotary-valve bearings and worn piston-valve applications.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Use it on the rotating bearings at the top and bottom of the rotary valve.
Yes. It is intended for piston valves that are worn or missing plating, where it fills the gap between piston and casing.
It is synthetic, non-toxic, odorless, and long-lasting.