Buffers are hydraulic units adaptable to a wide range of operating conditions, added to which they require very low maintenance. Bubenzer "BP" Hydraulic / Gas Energy Absorbtion Buffers are hydraulic units with damping pro......Buffers are hydraulic units adaptable to a wide range of operating conditions, added to which they require very low maintenance. Bubenzer "BP" Hydraulic / Gas Energy Absorbtion Buffers are hydraulic units with damping propertiesadaptable to a wide range of operating conditions, added to which they require very low maintenance.