Sierra All Clear PVC Tubing Polyester 1-18 Sierra All Clear PVC Tubing Polyester 1-12 has polyester braid reinforcement and 250 PSI burst pressure and a clear heavy wall FDA formula vinyl. I.D. 1 18 or 28.6mm Wt. C 32 O.D. 1 38 or 34.9mm Burst Pressure 70 250 Application Primarily used for pressurized water system supply hot or cold, drain lines sink, shower, icebox This hose is also used for wash down pump connections and head intake California Residents WARNING Cancer and Reproductive Harm - P