National Differential Pinion Seal - 710981 Part #: 710981 Line: NAT National Differential Pinion Seal 3 Year Limited Warranty Type: 40 Housing Bore (in): 3.071 Inch Housing Bore (mm): 78mm Inside Diameter (in): 1.890 Inch Inside Diameter (mm): 48mm Outside Diameter (in): 3.079 Inch Outside Diameter (mm): 78.2mm Thickness (mm): 14mm Width (in): 0.551 Inch Width (mm): 14mm Seal Material: Polyacrylate Rubber (ACM) Thickness (in): 0.551 Inch Shaft Size (mm): 48mm Shaft Size (in): 1.890 Inch Show More Show Less