Sealing Washer, Sealing Washer Type Metal Bonded Washer, Finish Cadmium Plated, Metal Material Steel, Material Grade/Class Not Graded, For Screw Size 1/4 in, Inside Diameter 0.54 in, Outside Diameter 0.81 in, Maximum Thickness 0.09 in, Seal Material Buna-N, System of Measurement Inch, Pack Size Small Pack, Maximum Temperature 220 Degrees F, Minimum Temperature -40 Degrees F, Seal Material Color Silver/Gold, Thickness Tolerance +/-0.008in