GRAINGER APPROVED O-Ring Metric Round Buna N PK25, 712H56

O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Metric Cross Section Shape Round O-Ring Material Buna N Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 57 mm Nominal Width 3.5 mm Actual Inside Dia 57 mm Actual Width 3.5 mm Color Black Durometer 70 Shore A Nominal Outside Dia 64 mm Actual Outside Dia 64 mm Temp Range -40 Degrees to 250 Degrees F FDA Approved No Properties Resistant to Oils Resistant to Water Application Standard