Accuflex Bev-Seal Ultra® 175 Series Tubing - .265" ID x 500 ft. BulkAccuflex Bev Seal Ultra 175 Series is the professional standard for flavor neutral beverage distribution. Featuring a . 265" ID (approx. 1 4") and a . 420" OD, this tubing utilizes a specialized copolyester inner liner that acts as a 100% flavor barrier. This ensures that soda, wine, and beer never pick up "plastic" off flavors, and prevents cross contamination in multi beverage systems. This 500 foot bulk spool is ideal for professional installers