Sealing Washer, Sealing Washer Type All Plastic or Rubber Washer, Finish Not Applicable, Metal Material Not Applicable, Material Grade/Class Not Applicable, For Screw Size M9, Inside Diameter 9 mm, Outside Diameter 13 mm, Maximum Thickness 2 mm, Seal Material H-NBR, System of Measurement Metric, Pack Size Small Pack, Minimum Thickness 2 mm