Merkel Wipers/Scrapers

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

Applications

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

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

Applications

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

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

Technical Data

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

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

Technical Data

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

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

Technical Data

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

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

Technical Data

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

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

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 jacksv
• 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

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

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

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

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