There’s nothing worse than sticky and scratchy valves. That's why brass players rely on Hetman #2 synthetic piston valve oil to keep their valves playing smoothly. This valve oil is specially formulated to lubricate piston valves with most tolerances and average clearance. The oil lasts longer and provides consistent non-gumming lubrication; it also protects from wear and corrosion, saving you time and money at the repair shop. Hetman #2 synthetic piston valve oil is safe for use with Monel, stainless steel, and nickel-plated pistons.