DELPEN SEP is a range of synthetic oils based on polyalphaolefin (PAO), designed for lubricating industrial gearboxes. They contain additives that provide oxidation resistance, foam control, and corrosion protection, and are chemically compatible with steel, copper, and bronze. The combination of extreme-pressure (EP) additives and synthetic base oil extends component service life under high and variable loads. DELPEN SEP oils are miscible with mineral oils.