FKM O-gyűrű
The o-ring is a double-acting sealing element. The sealing effect is achieved by deformation of the round profile of the o-ring. The size of the deformation is determined by the groove depth. The deformation, which is sometimes called also depression or pre-tension, acts in radial or axial direction and provides the o-ring with the initial sealing ability. Under pressure, the o-ring behaves similarly as a liquid with high surface tension. The pressure is uniformly transferred in all directions. The force raised by the initial deformation of the o-ring is added to the force raised by the pressure in the system and they together create the resulting sealing force.
- it may be used as the single and double acting solutions due to its symmetrical diameter
- simple groove decreases costs for design and production
- compact shape enables lower built-up
- simple and reliable installation, incorrect assembly is not possible
- it inexpensive and enables cost-effective solutions
- usability for wide range of static and dynamic sealing applications
- wide choice of mixtures for compatibility with most of the liquids
- with radial compression, e.g. for cocks, valves, hydraulic cylinders
- with axial compression, e.g. flange joints, lids, hydraulic elements
- For dynamic applications, the o-rings are recommended only for mild operating conditions.
Material | Code |
FKM |
OPERATING CONTITIONS
Temperature | -35 °C +220 °C |
Pressure | ≤160 bar |
SURFACE ROUGHNESS
Dynamic | Piston | ≤4 μm |
Rod | ≤2 μm | |
Groove base | ≤6-12 μm | |
Groove flanks | ≤25 μm | |
Static | Sliding surface | ≤10 μm |
Groove base | ≤25 μm |
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