Rubber inner core hose is often used in food, beverage, and dairy applications because they meet the approvals of industry. However, Teflon would be the ideal material choice if the products could offer the flex characteristics of rubber since Teflon is purer- does not impart taste nor odor.
The Swagelok U Series hoses offer superb flexibility and come with smooth silicone covers for external clean ability. U Series is recommended in 1 thru 2-inch sizes. Ideal for load cell/weigh scale applications and steam lines where exterior insulating protection may be required.