Hetman No. 13.5 Medium Bearing and Linkage Oil (Rotary Valve).
The Hetman company has discontinued supplying to Europe. J. Meinlschmidt, the world famous maker of valve sets for most of the professional rotary valve instrument makers, including Alexander, has developed their own line of synthetic lubricants as a replacement. These products have the same number designations and will be replacing the Hetman products.