OWS Technical Services

 Specialized Services for the Oil & Gas Industry

BioFlo STL - Stern Tube Lubricant

BioFlo STL  is a high performance, readily biodegradable product formulated from high quality synthetic ester technologies. This product is formulated to meet the US EPA 2013 Vessel General Permit (VGP) guidelines as an Environmentally Acceptable Lubricant (EAL). BioFlo STL’s lubricating film resists water, which keeps stern tube systems protected for extended periods of time and under severe operating conditions. In addition, this product is miscible with petroleum products commonly used for stern tube lubrication. Available in ISO grades 68, 100 and 150.


BioFlo STL is SKF Blohm-Voss approved making it safe and compatible with SKF Blohm-Voss seals.

BioBlend STL Technical Specifications