Sealing Washer Sealing Washer Type Metal Bonded Washer Finish Cadmium Plated Metal Material Steel Material Grade/Class Not Graded For Screw Size 1 1/4 in Inside Diameter 1.69 in Outside Diameter 2.067 in Maximum Thickness 0.108 in Seal Material Buna-N System of Measurement Inch Pack Size Small Pack Maximum Temperature 220 Degrees F Minimum Temperature -40 Degrees F Minimum Thickness 0.098 in Seal Material Color Silver/Gold Thickness Tolerance +/-0.008in