Merkel Wipers
Primary and secondary seals as well as the guides of modern sealing systems require reliable protection the use of wipers. Dirt, dust and moisture must not contaminate the operating medium and must above all be kept away from the pressure-loaded sealing edges. Depending on the application, simple wipers with or without metal reinforcement as well as double wipers with or without pressure relief come into use.
One-way operating AS
- Single acting wiper for the protection of cylinders against ingress of dirt, use in standardised housings, amongst others, according to ISO 6195 Type
B
One-way operating ASOB
- Single acting wiper for the protection
of cylinders against ingress of dirt
One-way operating AUAS
- Single acting wiper for the protection of cylinders against ingress of dirt use in standardised housings, amongst others, according to ISO 6195 Type B
- Secire seating in housing (press filling)
- No open ring gap to the outside (dirt pocket) between rod and wiperhousing
- No pressure build up between wiper and seal
- Axially open, easy to manufacture housing
- As a preference, we recommend the use of the more modern type AUAS R.
The wiper lip with a radius reliably wipes away dirt and simultaneously leave a residual film of oil on the retracting rod; friction behaviour, tightness and service life of the whole system are further improved
One-way operating AUAS R
- Single acting wiper for the protection of cylinders against ingress of dirt, use in standardised housings, amongst others, according to ISO 6195 Type B
- Secure seating in housing (press filling)
- No open ring gap to the outside (dirt pocket) between rod and wiperhousing
- No pressure build up between wiper and seal
- Axially open, easy to manufacture housing
- As a reference, we recommend the use of the modern type AUAS R. The wiper lip with a radius reliably wipes away dirt and simultaneously leaves a residual film of oil on the retracting rod; friction behaviour, tightness and service life of the whole system are further improved
One-way operating AUASOB
- Single acting wiper for the protection of cylinders against ingress of dirt, use in standardised housings according to ISO 6195 Type A
One-way operating AUPS
- Single acting wiper for the protection of cylinders against ingress of dirt, especially also as protective component and sealing component for pivoting bearings, amongst others, in standardised housings according to ISO 6195 Type B
- Secure seating in the housing (press fitting), no rotation with the shaft on pivoting motion
- Regreasing of pivoting bearings possible without problems; lip opens at low overpressure; old grease can escape
- Low axial housing height, wiper lip not protruding
- Axially open, easy to manufacture housing
One-way operating P 6
- NBR dirt wiper that is primarily used for large diameters
- Good seating at the outside diameter
- Very good wiping action
- Wiper can be used for a wide temperature range
- No twisting in the housing and no pressure build-up between seal and wiper
Two-ways operating P 8
- The Merkel Double Wiper P 8 exerts inwards the wiping function of a U-ring, and a wiping action outwards against soiling
- Strong wiping action against dirt
- Very good sealing effect against residual film of oil on the extending rod
- Wear-resistant
Two-ways operating P 9
- The Merkel Double Wiper P 9 exerts inwards the wiping function of a U-ring, and a wiping action outwards against soiling
- Intermediate sizes without mould/tool possible
- Strong wiping action against dirt
- Very good sealing effect against residual film of oil on the extending rod
- Wear resistant
Two-ways operating PRW1
- Double wiper for housings based on ISO 6195 Type A
- No pressure build-up between wiper and rod seal due to integrated pressure relief (patented)
- Improved sealing of overall system due to dynamic sealing lip with punched sealing edge
- Wiping lips has outstanding wiping action against dirt
- Static sealing lip for additional protection against ingress of dirt and water
Two-ways operating PT 1
- Double wiper for improvement of total tightness. Merkel Double Wiper PT 1 is preferably fitted in combination with our rod seals Merkel Omegat OMS-MR, Merkel Compact Seal T 20 or Merkel U-Ring LF 300
- Low friction, free of stick-slip
- Excellent regulation and positioning in operation
- Material variants for short stroke and high frequency available on enquiry
- High reliability, can accept the full operating pressure for short periods
- We recommend a pressure relieving bore. With buffer seals with good deformation value, pressure relief is not necessary. In any case, on the combination of seals without sufficient deformation value, e.g. Merkel Compact Seals NI 300, KI 310 and KI 320 a prssure relieving bore is required
Two-ways operating PT 2
- Double wiper for improvement of total tightness. The Merkel Double Wiper PT 2 is mainly fitted in combination with our rod seals Merkel Omegat OMS-S. A pressure relieving bore is to be provided between seal and wiper
- Excellent regulation and positioning in operation
- Low friction, free of stick-slip
- Material variants for short stroke and high frequency, available on enquiry
- Especially suitable for large diameters
Two-ways operating PU 11
- Double wiper for improvement of total tightness; dimensions also for standardised housing according to ISO 6195 Type C
- Sealing lips pointing inwards fulfil the function of a U-ring
- Wiper lip with lightly rounded sealing edge reliably wipes away dirt amd leaves a residual oil film on the retracting rod
- Tightness, service life and friction behaviour of the entire system are improved
- Merkel Double Wiper OU 11 is preferably fitted in combination with our rod seals Merkel Omegat OMS-MR. The double-lip wiper can take pressure up to 1.6 MPa. If higher pressures can build up we recommend a pressure relieving bore between seal and wiper
One-way operating PU 5
- Single acting wiper, use also in standardised housings according to ISO 6195 Type A
- Additional static sealing lip water spray
- Wiper lip with slightly rounded sealing edge reliably wipes dirt away and leaves a residual oil film on the retracting rod; friction behaviour and service life are improved
- The support on the wiper heel prevents twisting in the groove as well as pressure build-up wiper and seal
One-way operating PU 6
- Dirt wiper with bearing segments on the heel of the wiper and lightly rounded with lip
- No ingress of dirt and water spray via outside diameter
- Reliably wipes away dirt
- Leaves a residual film of oil on retracting rod
- No twisting and pressure build-up between seal and wiper
- Highly wear resistant
One-way operating PU 7
- PUR wiper for axially accessible housings, amongst others, for standardised housings according to ISO 6195 Type B
- Secure seating in housing (press fitting)
- Made of highly wear resistant polyurethane
- No open ring gap to the outside (dirt pocket) between rod and housing
- Easy to manufacture housing
- No corrosion betweem housing and wiper cage