Wiper GHK: page 30
GHK wipers are protective seals for the rods of mobile and industrial hydraulic cylinders, with a compact profile compatible with modern cylinders that have shallow grooves. They clean the rod during retraction and block dust, mud, and water from the external environment. The standardized European profile makes them directly replaceable in the vast majority of cylinders used in the mobile industry — a clear advantage when you need a part quickly and cannot afford waiting times. Full compatibility and dimensions are documented on the hydsealstore shop, with filters by diameter and application type.
Technical Specifications and Role of GHK Wipers
Made of polyurethane, chosen for its good abrasion resistance and stable performance over a wide range of temperatures. It operates between -30°C and +100°C, with consistent performance. The profile ensures uniform contact around the entire circumference of the rod, with a contact force calculated for effective cleaning without wearing the rod surface through excessive friction — an important balance for hard-chromed rods that are expensive to restore. The dimensions comply with European ISO and DIN standards, which guarantees direct compatibility with cylinders manufactured over the last two decades. The other cylinder seals are available in the range of hydraulic seals, with matching variants.
Performance in Industrial Environments with High Levels of Contamination
GHK is found in excavators, bulldozers, lifting platforms, steering systems of heavy vehicles, and industrial and mobile cylinders with standard protection requirements. The compact and standardized profile makes it suitable for a very wide range of cylinders — from light construction machinery to stationary industrial equipment. For extreme environments with fine abrasive dust or pressurized water, more specialized variants are available; for normal construction site or industrial conditions, GHK is the right choice in terms of value for money. Other profile variants are available in wipers, including those with double lips for environments with water and mud.
Selection and Installation Criteria for GHK Wipers
Identify the rod diameter and groove dimensions with a caliper, not from memory — on older machinery, the same nominal dimensions may have different tolerances. The GHK wiper is inserted with the lip facing outward. The groove must be thoroughly cleaned and inspected for burrs and traces of corrosion. During every cylinder overhaul, inspect the wiper and replace it if the lip shows visible wear or cracks — do not wait for leaks to appear at the internal seal, because by then it is already too late. The piston seals in the same system are available in the range of piston seals.
Advantages of Purchasing GHK Wipers
GHK wipers are a practical option for hydraulic cylinders with limited space in the installation groove area. The compact profile is suitable for numerous mobile and industrial applications where the wiper must protect the rod from dust, water, and mud without taking up much space.
At Hydraulic Seals Store, you can check the available dimensions and the compatibility of the profile with the cylinder being used. For correct identification, measure the rod diameter and the installation groove, especially if it is an older cylinder. If the dimensions are unclear, our team can help you check the appropriate GHK variant.