High Purity Fine Thread Flare Fittings Furon® FlareGrip II are used in conjunction with Furon® 400 Series Tubing to create a system for the transfer and direction of high purity or corrosive liquid chemicals throughout semiconductor process equipment and factories. Furon® FlareGrip II Fittings are available in a full line of industry standard flare fittings in straight, elbow and tee configurations, and offer the same footprint as industry standard fine thread flare fittings.