Sealing Washer Sealing Washer Type Metal Bonded Washer Finish Cadmium Plated Metal Material Steel Material Grade/Class Not Graded For Screw Size 5/8 in Inside Diameter 0.93 in Outside Diameter 1.26 in Maximum Thickness 0.108 in Seal Material Buna-N System of Measurement Inch Pack Size Small Pack Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Minimum Thickness 0.098 in Seal Material Color Silver/Gold Thickness Tolerance +/-0.150 in