SKF UN 16X22X4.5 hydraulic seal

SKF UN 16X22X4.5 is a reference of hydraulic seal, within Seals. Request a quote for UN 16X22X4.5 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The SKF UN series hydraulic seal is a single-lip oil seal designed for cylinder rods and hydraulic systems. Its geometry retains pressurized fluid and wipes the residual film, protecting the system from leaks and contamination. It is manufactured in elastomers resistant to mineral and hydraulic oils. At MR Accesorios Industriales we sell this line for industrial and mobile applications, and we help you identify the correct size from the part number engraved on the part.

The UN series designation is read directly on the product: for example, UN 16X22X4.5 indicates a seal with a 16 mm inner diameter, 22 mm outer diameter and 4.5 mm height. That nomenclature summarizes the three critical dimensions for mounting. In the UN series there are no additional suffixes in the usual part numbers; the number following the letters corresponds to those dimensions. If you find a part number with extra letters, it is advisable to check the manufacturer's catalog to interpret material or design variants.

UN series hydraulic seals are used in hydraulic cylinders of agricultural machinery, road equipment, presses, cranes and lifting systems. They also appear in actuators in the metallurgical, plastics and food industries, where pressurized oil must be contained. In Argentina they are common in the maintenance of combine harvesters, tractors and earthmoving equipment, as well as in test benches and stationary hydraulic units. Their function is twofold: sealing the rod and preventing the entry of dust or water into the circuit.

To select the correct seal, in addition to the dimensions, take into account the type of fluid, working temperature and system pressure. The UN series is intended for rods with reciprocating motion; the lip must be oriented toward the pressure. Before mounting, verify that the rod surface has no burrs or excessive wear, and lubricate the lip with the same oil as the system. Poor alignment or large axial play shortens the seal life. If the rod is damaged, replace or repair it before installing the seal.

Regarding equivalences, hydraulic seals are identified by their standardized dimensions, so a part number from another brand with the same dimensions may be interchangeable. However, differences in the elastomer compound or lip design can affect performance. At MR Accesorios Industriales we can guide you on compatibilities without compromising the integrity of the system.

If you need to replace a hydraulic seal, send us the full part number by WhatsApp. With the measurement and a photo of the part we can identify the SKF UN series reference and quote you the right option. We handle technical maintenance and repair inquiries throughout Argentina.