DBH 5988 radial shaft seal — 57.15 x 77.76 x 11.9

DBH 5988 is a reference of radial shaft seal, within Seals. Request a quote for 5988 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 5988 oil seal is a single-lip radial shaft seal with a spring, designed to retain lubricant and exclude contaminants on rotating shafts. Its dimensions — 57.15 mm shaft diameter, 77.76 mm housing diameter and 11.90 mm height — place it in medium-sized equipment, where radial space is limited and a reliable seal is needed. It is a wear part: when the lip hardens or a leak appears, it should be replaced before damage spreads to the shaft.

The DBH 5988 is identified by its numeric designation and by the Mz design, which corresponds to a radial shaft seal with a sealing lip and a retaining spring. The dimensions shown on the product page are 57.15 mm shaft diameter (d), 77.76 mm housing diameter (D) and 11.90 mm height (h). Those three dimensions define the mounting interference and the available axial space, so it is advisable to verify them with a caliper before ordering the replacement.

This type of oil seal is used in gearboxes, pumps, electric motors, transmission shafts and process equipment where oil or grease must be contained. It also appears in applications with dust or washdown water, where the lip must stop particles from entering. In all those cases it works supported on a rotating shaft and inside a machined housing, with the lip face oriented toward the fluid to be retained.

To select an oil seal properly, consider shaft speed, operating temperature and the type of lubricant. A spring-loaded lip such as the one in this design tolerates pressure variations and low speeds better than a lip without a spring. If the shaft shows wear, a seal with an auxiliary lip can be evaluated, always confirming the dimensions against the manufacturer's data sheet.

Installation requires cleaning the housing, lubricating the lip with the same oil used in the equipment and seating the seal without striking it sideways. A press or a tube of suitable diameter is recommended to seat it squarely. If the housing has burrs or the shaft has a deep mark in the contact area, the new seal will fail even if it is the same size.

If you need the DBH 5988 or an equivalent size, send the part number and dimensions by WhatsApp to MR Accesorios Industriales. With that data the designation can be cross-referenced and an alternative from the same family offered. MR sells this brand as part of its seals and oil seals line, and also manufactures housings, chains and pulleys to complete the order.