HOUGHTON'S Cosmolubric B-230 and HF-130 fire-resistant hydraulic fluids. B-230 fire-resistant hydraulic fluids for forging is a high viscosity, vegetable oil-derived fluid formulated with additives to enhance corrosion protection, metal passivation, and oxidative inhibition. HF-130 is a high-quality synthetic polyol ester hydraulic fluid. Chemically and thermally stable, it is designed for long life and dependable performance.