Radial shaft seal DBH 1311

DBH 1311 is a radial shaft seal reference, within Seals. Request a quote for 1311 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 1311 radial shaft seal is a lip seal designed to close the passage of lubricant and prevent the entry of contaminants in rotating equipment. It mounts in housings of 90 mm diameter with a height of 10 mm and corresponds to design A 378. It is a common wear part in pumps, electric motors, gear reducers and transmission boxes, where the shaft rotates continuously and sealing is key to the service life of bearings and gears.

The DBH 1311 is a radial shaft seal from the DBH line, with an outer housing of 90 mm and an overall height of 10 mm. Its A 378 design defines the geometry of the lip and the metal body, intended for cylindrical housings and rotating shafts. In the designation, the code 1311 identifies the size and the construction type within the series. It is a contact seal, with an elastomeric lip and steel case, that works on the shaft to retain oil or grease and block dust and ambient moisture. It is press-fitted into the housing and remains fixed, while the lip slides gently over the shaft surface.

Typical applications of this oil seal include centrifugal pumps, electric motors, speed reducers, gearboxes and power transmission equipment. It is also used in machine tools, compressors and roller systems where bearings must be protected from the entry of particles. In all cases, the oil seal serves a dual function: it prevents lubricant leaks to the outside and stops the entry of dirt, water or chips that accelerate wear on raceways and gears. That is why it is a critical part in preventive maintenance.

To correctly select and assemble the DBH 1311, verify that the housing diameter is 90 mm and the housing height is 10 mm. The shaft must have the measurement corresponding to design A 378, with a polished surface and no burrs so as not to damage the lip. Before assembly, lubricate the lip with the same oil or grease as the equipment and place the oil seal perpendicular to the shaft, with a flat support tool. Avoid hitting it directly on the lip. If the shaft shows wear or a marked groove, consider a nearby size or an oil seal with the lip in another position.

If you need an equivalent or a size close to the DBH 1311, the most practical thing is to send us the complete part number, the housing and shaft measurements, and a photo of the old part or the housing. With that data we can look for alternatives within the DBH line or other brands we sell, always respecting the geometry of design A 378. We can also advise you if the housing has a shoulder or if the original oil seal is no longer available. The idea is that you do not end up with the equipment stopped for a wear part.

At MR Accesorios Industriales we sell the DBH brand. If you want to request a quote for the DBH 1311 oil seal or ask about an equivalent size, send us the part number on WhatsApp and we will reply shortly with the alternative that best fits your equipment.