Radial shaft seal DBH 9778 — 59.00 x 75.00 x 9.00/11.50

DBH 9778 is a radial shaft seal reference, within Seals. Request a quote for 9778 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 9778 seal is a radial seal with design A 103 that is mounted on 59 mm shafts and 75 mm housings, with a height of 9.00/11.50 mm. Its function is to retain the lubricant inside the assembly and prevent the entry of dust, water or particles that accelerate the wear of bearings and bushings. It is a common replacement part in rotating equipment where the shaft rotates inside a fixed housing. MR Accesorios Industriales carries it as part of its seals and oil seals line.

This item is a DBH 9778 radial shaft seal, identified by its designation 9778 and manufactured with design A 103. Its nominal dimensions are 59 mm shaft diameter, 75 mm housing diameter and a height of 9.00/11.50 mm. That double height indicates that the sealing lip can be mounted in two positions or that the profile has a step, something that should be verified against the housing before installing it. Design A 103 corresponds to a seal with a single lip and metal body, suitable for rotating shafts with permanent lubrication.

Seals such as the DBH 9778 are used in gearboxes, pumps, electric motors, conveyor rollers and power transmission equipment. They also appear in agricultural machinery, compressors and pumping systems where two environments must be separated: one with oil or grease and another exposed to dirt or moisture. In all those cases, the seal protects the bearings and prevents leaks that dirty the equipment and force lubricant to be replenished.

To select and mount a seal, three things must be verified: that the shaft and housing diameters match the values on the product page, that the height is compatible with the depth of the cavity and that the lip material is resistant to the fluid and the working temperature. Mounting is done with the shaft clean and free of burrs, lubricating the lip and using a tube or support bushing so as not to damage it. If the shaft shows wear, it is advisable to consider a seal with the lip in a displaced position or a repair sleeve.

If you need an equivalent or a neighbouring size, the most practical thing is to send us part number 9778 and the current dimensions of the shaft, the housing and the height. With that data we can look for an alternative within the same family or suggest a seal with close dimensions that fits the housing. We can also guide you on the type of lip and the material according to the fluid and temperature of your equipment.

To request a quote for the DBH 9778 seal, write to us on WhatsApp and send us the part number or the dimensions. At MR Accesorios Industriales we work with seals and oil seals for replacement and also with housings, bearings and power transmission. If the seal comes together with a bearing or a bushing, we can put together the complete enquiry and help you define the assembly.