Description Specifications Literature Description Parker Seal Nut and Washer ThredSeal Kit for 70 Series Go Switches. 3/8" Zinc plated steel with Viton (hi-temp or hydraulic fluids detergent) washer. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications Product SpecificationsMaterial:VitonDimensions:3/4" Literature & Docs Accessories