Barbed fittings are the go-to fitting for connecting directly to a hose or tube, snugly and securely. The Valved Flow path maintains a controlled disconnect of fluid and gas lines that are under pressure. Acetal is a lightweight, low-friction, and wear-resistant material that is medical grade and sterilizable. Silicone O-Rings are resistant to extreme environments and high temperatures. These Non-Magnetic springs are made from non-ferrous metals and are rated MRI conditional. Size 5 fittings are designed to accommodate tubing that measures 5/16" or 7.94mm (ID).