Backyard Dudes&reg; Garden Hose Heavy Duty Silicone Rubber Washers-10-pack Made in USA Aero Space Silicone Aerospace Grade High Quality Real Silicone Rubber Made in USA Manufactured by Backyard Dudes 250'F Temp use on Hot Water line washing machine Lifetime Quality Guarantee only when purchased from Backyard Dudes Will not crack or get hard like a import Box Store Rubber washer