Polyacetal / POMPolyacetal POMPolyacetal / POMPolyacetal / POM
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Piston-, rod guide elements of polyacetal (POM)

Guide rings of polyacetal (POM) are glass-reinforced and serve to locate the piston and rod. They prevent metallic contact between the moving components and absorb any side loads that occur. The guide rings are used in hydraulic and pneumatic cylinders. Guide rings of polyacetal (POM) are characterized by good frictional behavior, stick-slip-free running, high load-bearing capacity and optimum wear resistance.

POM guide elements are manufactured by the injection molding process and are supplied for piston and rod guiding applications as ready-to-install components. The profile is rectangular and beveled or rounded at the edges in order to avoid impermissible edge compression in the groove corners and to facilitate fitting in the groove.

The guide rings are pre-formed and provided with a diagonal cut. A straight 90° cut is also possible for special applications.The gap necessary for efficient operation has already been accommodated in the rings. This gap is necessary to avoid undesirable pressure build-up and to compensate for elongation of the rings.


  • Good friction and wear behavior
  • No stick-slip effect
  • High wear resistance
  • Very low water absorption
  • Good chemical resistance
  • Embedding of foreign particles possible within limits
  • Simple installation by snapping into the groove

Application ranges

Velocity:reciprocating up to 0,8 m/s
Temperature:- 40° C to + 120° C
Stat. compressive strength:to 40 N/mm²  (abhängig von Temperatur)


The guide rings are manufactured from glass-reinforced polyacetal and are suitable for a wide range of medium-duty applications in hydraulics and pneumatics.

Standard design: Diagonal cut
Special design: Straight 90° cut


All information and values stated concerning our product portfolio are based on the knowledge optained through a long experience of manufacturing and application.
These figures are for indicative purposes only and may vary (exceed or deceed) according to the particular circumstances. Unknown factors in the applications and practice can considerably change the conditions and reduce and change statements, which may cause the above information to be invalid.
No liability can be accepted for any mistakes or omissions, error and subject to change without prior notice.


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Technical information

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Polyacetal / POM


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