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Hydraulic Cylinder Wiper Seals - Unfazed by Dirt

Wipers Protect Pneumatic and Hydraulic Cylinders From Contaminants

In pneumatic and hydraulic cylinders, wipers protect the interior of the cylinder against external contaminant, as the cylinder rod is retracting. Freudenberg Sealing Technologies (FST) offers the correct wiper for every kind of cylinder and application. These wipers offer maximum reliability and operating life, and can be customized with or without metal reinforcement, or as a double lip wiper with or without pressure relief.

Maximum Protection Through Precise Adjustment

Primary and secondary seals as well as the guides of modern sealing systems require reliable protection the use of wipers. Dirt, dust, moisture and other environmental influences must not contaminate the operating medium and must above all be kept away from the pressure-loaded sealing edges and other contact zones.

Freudenberg Sealing Technologies Wipers are precisely adjusted to the particular conditions of use and are impressive for their maximum protective effect.

The DMRW 2 Wiper: The Pinnacle of Protection Against Dirt

The DMRW 2 from Freudenberg Sealing Technologies stands at the pinnacle of protection and reliability under extreme operating and environmental conditions. It is a double lip wiper that is equipped with both metal reinforcement and pressure relief.

Its material is advanced. The DMRW 2 is made from a new polyurethane developed by Freudenberg Sealing Technologies that has outstanding wear resistance, high chemical resistance and broad temperature range capabilities.

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Our Products in Detail

Merkel® Wiper P 6

Single-action elastomer wiper with supporting segments. Particularly suited to large diameters and a broad temperature spectrum.

Merkel® Wiper PU 12

Single-action polyurethane wiper with supporting segments and sealing edge for the groove base; exterior sealing.

Merkel® Wiper PU 5

Rod guide rings, made of fabric-based laminate with chamfered profile edges. Also suited to standardized installation spaces in accordance with ISO 19766.

Merkel® Wiper PU 6/PH 6

Single-action polyurethane wiper with supporting segments. Additional static seaing edge for a strong protective effect.

Merkel® Double Wiper P 8

Double-action elastomer wiper that performs the wiping function of a U-ring internally and the wiping effect against contamination externally.

Merkel® Double Wiper P 9

Double-action elastomer wiper that performs the wiping function of a U-ring internally and the wiping effect against contamination externally. Especially suited to use in large cylinders.

Merkel® Double Wiper PT 1

Consisting of two O-rings as pretensioning element and a PTFE profile ring with one wiper and one seal edge to improve the overall leak tightness of the sealing system.

Merkel® Double Wiper PT 1 DR HB

Consisting of two O-rings as a pretensioning element and one PTFE profile ring with one wiper and one sealing edge to improve the overall leak tightness of the sealing system. For combined rotary-lifting movements.

Merkel® Double Wiper PT 2

With dirt shield, consisting of two O-rings as a pretensioning element and one PTFE profile ring with one wiper and one sealing edge with pressure relief to improve the overall leak tightness of the sealing system.

Merkel® Double Wiper PT 2 PR

Merkel® Double Wiper PT 3

Consisting of two O-rings as a pretensioning element and one PTFE profile ring with one wiper and one sealing edge to improve the overall leak tightness of the sealing system; externally sealing.

Merkel® Double Wiper PU 11

With a formed wiper lip (double lip wiper). The seal lip, which is directed inward, fulfills the function of a U-ring. Use especially in connection with an Omegat rod seal.

Related Products of the Dichtomatik Brand

Premium Freudenberg brand products meet the highest quality requirements and are suitable for all segments and applications. Complementing this, Dichtomatik brand products are a good solution for moderately demanding, non-safety-critical applications.

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