DBH 1339 radial shaft seal

DBH 1339 is a reference of radial shaft seal, within Seals. Request a quote for 1339 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 1339 oil seal is a radial seal of A 378 design that fits a 55 mm housing bore and has a 10 mm height. Its function is to retain lubricant inside the assembly and block the entry of dust, water or particles, protecting bearings, shafts and gearboxes. It is a wear part: when the running surface becomes marked or the lip loses elasticity, it should be replaced to prevent leaks and contamination in the mechanism.

This item is a DBH 1339 radial shaft seal, identified by part number 1339 and A 378 design. The housing bore (D) measures 55 mm and the height (h) is 10.00 mm. The sealing lip runs on the rotating shaft and the outer case stays fixed in the housing bore, providing the sealing of the assembly.

It is used in gearboxes, pumps, electric motors, rollers and power transmission equipment where oil or grease must be contained and contaminants kept out. It also appears in agricultural machinery, conveyors and process lines operating with dust or moisture. In all these cases it performs the same function: separating the lubricated side from the environment and supporting the service life of the bearings and gears inside.

To install it, check that the 55 mm housing bore is clean, free of burrs and marks, and that the shaft is not worn in the lip contact area. Lubricate the lip before inserting it and fit the seal perpendicular, without striking the seal. When selecting a replacement, take into account the housing bore diameter, the height, the type of fluid and the working temperature. If the shaft is scored, consider repairing it or using a different shaft size.

To quote part number 1339, the housing bore and height measurements, and a photo or sample of the old seal, send us. With that data we look for alternatives within the DBH line or from other brands we sell. We can also advise you if the A 378 design is not suitable for your application and it is better to move to another lip profile or a different material.

MR Accesorios Industriales sells the DBH brand as a brand. If you want to confirm equivalents, write to us on WhatsApp with part number 1339 and the housing bore measurements. We will reply with the option that best suits your equipment.