• W40-72-12 BA | W407212BA• Inner dimension: 40, Outer dimension: 72, Width: 12, Weight: 0,01, Version: Rubber coating, Pressure resistance: Up to 0.5 bar max., Dust lip/Protective lip: Without, Material: NBR (Perbunan), Temperature range: -30 to +100 °C, Tension spring: Non-alloy steel