Silicone Milk Tubing is absolutely sanitary and, due to tightly bonded non-reactive pure resins, unaffected by milk fat or bacteria. Perfectly hygienic with a longer life span than other types of milk tubing when used properly, silicone tubing is as strong as plastic, more flexible than rubber, and can withstand -20° temperatures and boiling wash water. Stays transparent and resilient longer than plastic tubing. Not recommended for use with automated pinch valves. 7/8" ID 1-3/8" OD