Adapter fittings are manufactured to be threaded directly into standardized NPT 1/2" mates. The Open Flow path enables a quick connect and disconnect between fluid and pneumatic lines. Polysulfone is a rigid, high-strength, semi-tough, transparent plastic that offers higher heat resistance and better hydrolytic stability than polycarbonate. Non-Lubricated Silicone O-Rings are ideal for pharma applications that require ultra purity through the fluid path. 302 Stainless Steel is a material that is corrosion resistant and is considered a general-purpose spring. Size 8 fittings are designed to accommodate tubing that measures 1/2" or 12.7mm (ID).