Fey Laminar Rings
The development of our laminar rings dates from 1946. The rings were initially used to seal used pistons and cylinders in internal combustion engines in order to improve poor compression and to reduce high oil consumption.
One of the main prerequisites for the advanced development of laminar ring seals was that the laminar rings had to be produced in a special process. This process had to ensure that the rings in their working position met the following conditions:
 | When used as external rings their round shape had to rest in a casing bore hole |
| When used as internal rings their round shape had to rest on a shaft, offering the maximum possible gap clearance |
This procedure and the sealing effect - when used as gap and labyrinth seal - gave Fey the opportunity to solve problems that occurred in industry. Many problem areas in the sealing sector, where no suitable solution had previously been found, could now be covered by laminar rings, including rotating and static parts in mechanical and automotive engineering and other constructions.
Applications of Fey Laminar rings include for example:
| Roller bearings |
| Exhaust pipes for internal combustion engines |
| Wheel set bearings for rolling stock |
| Continuous casting plants |
| Transmission systems |
| Power systems |
The design of the sealing units and the installation technology depends on the operating and movement process of the components that require sealing.
Important to mention is that the laminar ring sealing units should not be shifted by axial motion of the support or guide grooves caused by axial bearing play. This would result in a coupling effect. Depending on the frequency, friction would be generated between the groove and the ring flanks which may lead to premature wear of the rings and the surrounding components.
Josef Fey
Fey Laminar Rings