Merkel Wipers/Scrapers

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• PT 1 Low Friction Wiper
  

  Low friction wiper consisting of one profile ring with a sealing edge and a wiper edge, as well as two O-Rings as pre-load components. A wiper for improvement of overall tightness, PT 1 is fitted preferably in combination with our rod seals. We recommend a bore hold for relieving pressure. No pressure release is needed for these seals with a good pump-back action. Where there is a combination of seals without sufficient pump-back capability a pressure-relieving hole is required.

  Technical Data

  Linear Velicity	Medium/Temperature
  15 ft/s / 5.0 m/s	PTFE B602 / 70 NBR B276 (PTFE Bronze/NBR)

  Applications

  • Fork-lift trucks
  • Agricultural equipment
  • Injection molding machines
  • Control and regulating apparatus
  • Handling equipment
  • Compression molding
  • Mills
  • Steel
• PT 2 Low Friction Wiper
  

  Low friction wiper consisting of one profile ring with a sealing edge and a wiper edge, as well as two O-Rings as sealing and pre-load components. A wiper for improvement of overall tightness. PT 2 is fitted mainly in combination with our rod seals OMS-S. A pressure relieving hold provided between seal and wiper.

  Technical Data

  Linear Velicity	Medium/Temperature
  15 ft/s / 5.0 m/s	PTFE B602 / 70 NBR B276 (PTFE Bronze/NBR)

  Applications

  • Fork-lift trucks
  • Agricultural equipment
  • Injection molding machines
  • Control and regulating apparatus
  • Handling equipment
  • Compression molding
  • Mills
  • Steel
• P 6 Wiper
  

  Single-acting elastomeric rod wiper with support components. NBR rod wiper which finds its main use with large diameters.

  Technical Data

  Linear Velicity	Medium/Temperature
  6 ft/s / 2 m/s	85 NBR B247

  Applications

  • Earth moving equipment
  • Injection molding machines
  • Compression molding
  • Support cylinders
  • Hydraulic jacks
  • Mining hydraulics
  • Hydraulic presses
  • General cylinders

  Single-acting elastomeric rod wiper with support components. NBR rod wiper which finds its main use with large diameters.

  • Very good seat in the outer diameter
  • Very good wiping action
  • Wiper can be used for a broad temperature range
  • No anti-rotation in housing and no pressure build-up between seal and wiper
• P 7 Wiper
  

  Single-acting rod wiper made from Polyurethane with integrated metal retainer. PUR wiper for axial-accessible housings.

  Technical Data

  Linear Velicity	Medium/Temperature
  6 ft/s / 2 m/s	85 NBR B247

  Applications

  • Agricultural equipment
  • Earth moving equipment
  • Cranes
  • General cylinders

  Single-acting elastomeric rod wiper with support components. NBR rod wiper which finds its main use with large diameters.

  • Firm seat in installations space (press fit)
  • Made from highly wear-resistant polyurethane
  • No open ring gap (dirt pocket) outwards between rod and housing
  • Easy to manufacture housing
  • No corrosion between housing and wiper retainer
• PU 7 Press Fit Wiper
  

  Polyurethane rod wiper with integrated metal retainer designed for axial-accessible housings.

  Technical Data

  Linear Velicity	Medium/Temperature
  6 ft/s / 2 m/s	95 AU V149

  Applications

  • Agricultural equipment
  • Earth moving equipment
  • Cranes
  • General cylinders

  Single-acting elastomeric rod wiper with support components. NBR rod wiper which finds its main use with large diameters.

  • Firm seat in installations space (press fit)
  • Made from highly wear-resistant polyurethane
  • No open ring gap (dirt pocket) outwards between rod and housing
  • Easy to manufacture housing
  • No corrosion between housing and wiper retainer
• PU 10 Wiper
  

  Single-acting rod wiper made from Polyurethane with integrated metal retainer.

  Technical Data

  Linear Velicity	Medium/Temperature
  1.5 ft/s / 0.5 m/s	95 MV149

  Applications

  • Grappling hook

  Single-acting rod wiper made from Polyurethane with integrated metal retainer.

  • Firm seat in installations space (press fit)
  • Made from highly wear-resistant polyurethane
• PU 5 Wiper
  

  Rod wiper with additional static sealing lip and support components; sealing edge of wiping lip lightly chamfered. The PU 5 is a single-acting wiper, use even in standardized housings according to ISO 6195 Type A.

  Technical Data

  Linear Velicity	Medium/Temperature
  6 ft/s / 2 m/s	95 AU V149

  Applications

  • Earth moving equipment
  • Fork lift trucks
  • Agricultural equipment
  • HGV loading cranes
  • Injection molding machines
  • Mining hydraulics
  • Telescopic cylinders
  • Loading platforms
  • Compression molding
  • Support cylinders
  • Hydraulic jacks
  • Cranes
  • General cylinders

  Single-acting rod wiper made from Polyurethane with integrated metal retainer.

  • Additional static sealing lip prevents ingress of dirt and water spray
  • Wiper lip with lightly rounded sealing edge wipes dirt away safely and leaves a residual oil film on the retracting rod
  • The support on the wiper heel prevents twisting in the groove as well as pressure build-up between wiper and seal
• PU 11 Double Acting Wiper
  

  The PU 11 double acting wiper is designed for improvement of overall tightness and has dimensions even for standardized housings; according to ISO 6195 type C. The PU 11 is fitted preferably in combination with our rod seals OMS-MR. The doublelipped wiper can take pressures up to 1.6 MPa. The lightly rounded sealing edge wipes dirt away safely and leaves a residual oil film on the retracting rod. Tightness, working life and friction behavior of the entire system are affected positively.

  Technical Data

  Linear Velicity	Medium/Temperature
  6 ft/s / 2 m/s	95 AU V149 Hydraulic oils HL, HLP -30°C/-22°F to +110°C/230°F

  Applications

  • Fork lift trucks
  • injection molding machines
  • Standard cylinders

  U-Cup with wiper lip (double-lipped wipers); sealing edge of wiper lip lightly chamfered. Double wiper for improvement of overall tightness; dimensions even for standardized housings according to ISO 6195 type C. PU 11 is fitted preferably in combination with our rod seals OMS-MR. The double-lipped wiper can take pressures up to 1.6 MPa.

  • Sealing lips directed inwards fulfill the U-packing function
  • Wiper lip with lightly rounded sealing edge wipes dirt away safely and leaves a residual oil film on the retracting rod
  • Tightness, working life and friction behavior of the entire system are affected positively
• PU 6 Wiper
  

  Single-acting wiper with static sealing edge on the outer diameter. The rod wiper has support components on the heel of the wiper, and lightly chamfered wiper lip.

  Technical Data

  Linear Velicity	Medium/Temperature
  6 ft/s / 2 m/s	95 AU V149

  Applications

  • Earth moving equipment
  • Injection molding machines
  • Compression molding
  • Support cylinders
  • Hydraulic jacks
  • Mining hydraulics
  • General cylinders

  Single-acting PUR wiper with static sealing edge on the outer diameter. Rod wiper with support components on the heel of the wiper and lightly chamfered wiper lip.

  • No ingress of dirt and water spray via outer diameter
  • Wipes dirt safely away
  • Leaves a residual film of oil on retracting rod
  • No twisting and pressure build-up between seal and wiper
  • Highly wear resistant