FEY Laminar Rings were developed in Germany in 1946, and were initially used to seal pistons and cylinders on internal combustion engines.  Hundreds of European companies have used FEY Laminar Rings to seal their manufactured equipment.  The FEY ring is a uniquely designed sealing ring set.  FEY Rings come in many different styles, designed specifically to handle the requirements of a particular application, making them useful in many industries.  The materials, designs, manufacturing techniques and application expertise make FEY Rings, the laminar seal that provides the proper seal; not something that fits a groove.