The development of laminar rings dates from 1946. The rings were initially used to seal used pistons and cylinders on internal combustion engines to improve poor compression and to reduce high oil consumption. However, this range of applications was not enough to secure the future of Fey. One of the main prerequisites for the advanced development for the laminar ring seal was that the laminar rings were specially produced in such a way that in their working position when used as outspringing ring their shape fitted a round bore, whilst when used as inspringing rings fitted a round shaft, offering the maximum possible gap sealing. With this technique and their sealing effect when used as gap and labyrinth seals, Fey were able to tackle sealing problems which occurred in industry. Many problem areas in the sealing sector where no suitable solution had previously been found have now been successfully solved by laminar rings, including rotating and static parts in mechanical and automotive engineering together with other assemblies. Successful users of Fey laminar rings include, for example, manufacturers of roller bearings, exhaust pipes for internal combustion engines, wheelset bearings on rolling stock, continuous casting plants, transmission systems, power units and many others. Fey Laminar Rings are not only used as inspringing or outspringing ring sets, but can also be combined within a groove. Their increased labyrinth effect this produces optimizes the sealing effect. However, it must be pointed out that these combinations cannot be generally recommended for all sealing applications and we should be consulted. The laminar ring sets can be used as single wound or double wound rings, depending on the sealing problem for which they are required. The design of the seal sets and their installation method depends on the operation and movements of the components which require sealing, and will differ from case to case. One thing which must be avoided at all costs is that the laminar ring seal sets are moved axially by the movement of the groove, which may result from the axial play in the bearings. Depending on the frequency involved, friction would be generated between the ring and the groove flanks which may lead to premature wear of the rings and adjacent components. Before you use the laminar rings as standard, you should conduct tests to check whether the sealing result meets your expectations and requirements.