Radial shaft seal DBH 5991 — 57.00 x 81.00 x 11.11

DBH 5991 is a radial shaft seal reference, within Seals. Request a quote for 5991 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 5991 radial shaft seal is a lip seal designed to block the passage of lubricant and prevent the ingress of contaminants in equipment with a rotating shaft. Its dimensions of 57 mm shaft diameter, 81 mm housing and 11.11 mm height make it suitable for gearboxes, pumps and motors where the mounting space is standardized. MR Accesorios Industriales carries this brand and advises you so you choose the correct seal for your application.

This item is a radial shaft seal from the DBH brand, identified by code 5991. Its dimensions are 57 mm shaft diameter (d), 81 mm housing diameter (D) and 11.11 mm height (h). The Mx design corresponds to a configuration with sealing lip and metal body, intended to retain oil or grease on rotating shafts. The lip elastomer and the internal spring work together to maintain contact on the shaft and compensate for small misalignments.

Typical applications for a seal of this size include gearboxes, speed reducers, centrifugal pumps, electric motors and power transmission equipment. In all cases, the function is the same: confine the lubricant inside the assembly and block dust, water or particles that could accelerate wear of bearings and gears. It is a wear part that should be replaced when leaks or abnormal noises appear.

To install it correctly, verify that the shaft and housing diameters match the indicated dimensions. The shaft must be clean, free of burrs or deep marks, and it is advisable to lubricate the lip before inserting it. The 11.11 mm height defines the axial space available in the housing. If the housing has a chamfer or a shoulder, make sure the seal sits flat and fully seated. Forced or tilted installation can damage the lip and cause premature leaks.

If you cannot find code 5991 or need a nearby size, we can look for an equivalent within the same series or from another brand. To do so, send us the original code, the shaft, housing and height dimensions, and a photo or sample of the old seal. With that data we verify alternatives and confirm the closest option. We can also advise you if the Mx design is not the right one for your equipment.

At MR Accesorios Industriales we carry the DBH brand as part of our line of seals and oil seals. If you want to request a quote for this seal or ask about other sizes, write to us on WhatsApp with code 5991 and we will reply shortly. We can also help you identify the correct seal from your equipment's technical data sheet or from the part used as a sample.