SKF ZW 42X52 hydraulic seal

SKF ZW 42X52 belongs to hydraulic seal, part of our Seals range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for ZW 42X52 and any equivalents.

These SKF ZW hydraulic seals are lip seals that mount on the rods of hydraulic cylinders. They keep pressurized oil inside the cylinder and block dust, water and other contaminants from getting in. The range covers standard sizes from 25x32 up to 45x55, along with other variants. Because they are wear parts, replacement is due when the lip stiffens or fluid starts to escape.

Reading a ZW part number is straightforward. The letters ZW come first, then two numbers separated by an X: the first is the inner diameter and the second is the outer diameter. So ZW 25X32 is a seal with a 25 mm inner diameter and a 32 mm outer diameter. Any letters after the dimensions point to material or lip configuration variations, but for this series the diameter pair is what identifies the part. Cross-check that full number against both the rod and the housing before ordering.

You will find these seals on hydraulic cylinders in farm equipment, road machinery, presses, forklifts and lifting systems. They also show up in metallurgy, plastics processing and earthmoving, where rods run in pressurized oil and face dust or water. In Latin America they are a common sight on agricultural implements and construction machines working in tough conditions. MR Industrial Accessories supplies this line for maintenance and replacement work.

For a correct fit, the inner diameter has to match the rod and the outer diameter has to match the housing. The width and lip profile must also follow the original design. When installing, coat the lip with the same oil the system uses, keep the seal away from impacts and confirm the rod has no burrs. Cylinder alignment and the finish of the rod surface both influence how long the seal lasts. A pitted or worn rod will prevent even a new seal from sealing.

Equivalents are easy to source because hydraulic seals are defined by standard dimensions. Different manufacturers offer products with the same measurements, and what counts is holding the size and lip type. Nomenclature varies from brand to brand, so work in millimeters rather than part numbers. If anything is unclear, send the number stamped on the old seal or the dimensions you measured with a caliper. We can advise you so the replacement is the right one.

To get a quote, message us on WhatsApp with the complete seal part number, such as ZW 30X37, or with the rod and housing dimensions. With that information we will reply promptly and include alternatives where useful. We supply recognized brands and also manufacture other product lines in-house, all with the goal of getting your equipment back in service.