DBH 5988 radial shaft seal — 57.15 x 77.76 x 11.9

DBH 5988 belongs to radial shaft 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 5988 and any equivalents.

For rotating shafts that need reliable lubricant retention and contaminant exclusion, the DBH 5988 oil seal is a single-lip radial shaft seal with a spring. Its dimensions — shaft 57.15 mm, housing 77.76 mm, height 11.90 mm — suit medium-sized equipment where radial space is tight. As a wear part, it should be replaced when the lip hardens or leaks appear, before the shaft suffers damage.

The DBH 5988 is identified by its numeric designation and the Mz design, which denotes a radial shaft seal with a sealing lip and a retaining spring. The three critical dimensions are 57.15 mm for the shaft (d), 77.76 mm for the housing (D), and 11.90 mm for the height (h). These define the mounting interference and axial space; always verify them with a caliper before ordering a replacement.

Typical applications include gearboxes, pumps, electric motors, transmission shafts, and process equipment where oil or grease must be contained. The seal also works in dusty or washdown environments, preventing particle ingress. It operates on a rotating shaft within a machined housing, with the lip facing the fluid to be retained.

When selecting an oil seal, consider shaft speed, operating temperature, and lubricant type. A spring-loaded lip like this one handles pressure variations and low speeds better than a springless lip. If the shaft is worn, an auxiliary lip seal may be an option, but always confirm dimensions against the manufacturer's data sheet.

Installation requires a clean housing, lubrication of the lip with the same oil used in the equipment, and square seating without side impacts. Use a press or a tube of suitable diameter to seat it evenly. Burrs in the housing or deep marks on the shaft will cause even a correctly sized seal to fail prematurely.

To order the DBH 5988 or an equivalent size, send the part number and dimensions via WhatsApp to MR Industrial Accessories. We will cross-reference the designation and suggest an alternative from the same family. MR supplies this brand as part of its seals and oil seals line, and also manufactures housings, chains, and pulleys to complete your order.