Instrument Lubricant Because the cleaning process removes all soils, instruments should be lubricated after cleaning and prior to sterilization to ease stiffness and help prevent rust. Medline Instrument Lubricant helps prolong instrument life by preventing rust and corrosion. Non-silicone, patient-safe lubricant keeps box locks working freely and maintains effectiveness of grasping and cutting surfaces. Protects all types of metal instruments including carbon steel. Will not interfere with steam or gas sterilization. Bacteriostatic.