Flanges With Flat Face

A Flat Face (FF) flange has a flat, smooth sealing surface that is in contact with the entire gasket surface. This design is typically used in applications where the mating flanges are made from materials with low mechanical strength, such as cast iron or fiberglass. The flat face ensures even distribution of pressure across the gasket, minimizing the risk of flange warping when the bolts are tightened. FF flanges are commonly found in low-pressure, non-critical applications in plumbing, water treatment, and other industries