Radial shaft seal DBH 8721Pol — 40.00 x 55.00 x 8.00

DBH 8721Pol is a radial shaft seal reference, within Seals. Request a quote for 8721Pol via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 8721Pol radial shaft seal is a lip seal mounted on the shaft and inside the housing to contain lubricant and block the entry of contaminants. Its Lx-Bidi design combines a main lip and a secondary lip that seal in both directions, making it suitable for equipment where oil or grease must remain confined and dust or water cannot enter. It is used in gearboxes, pumps, electric motors and industrial drives.

This item is a radial shaft seal from the DBH brand, identified by the designation 8721Pol. Its dimensions are 40.00 mm shaft diameter, 55.00 mm housing diameter and 8.00 mm height. The Lx-Bidi design indicates a double-lip configuration: the main lip retains the lubricant and the secondary lip provides an additional barrier against dust, water or particles. The lip elastomer works on the rotating shaft, while the outer diameter maintains the fit in the housing.

Typical applications for a 40x55x8 mm seal with a double lip include gearboxes, speed reducers, centrifugal pumps, electric motors, compressors and drive equipment. In these assemblies, the seal prevents oil leaks to the outside and protects the bearings from the ingress of dirt. It is also used on shafts of fans, mixers and conveyors where there is exposure to environments with moderate dust or humidity.

To correctly select this seal, verify that the shaft diameter is within the tolerance recommended for radial shaft seals and that the housing has the diameter and depth suitable for the 8.00 mm height. The shaft surface must be ground and free of burrs or marks that could damage the lip. During installation, lubricate the lip with the same oil or grease used in the equipment and use an installation tool that prevents deforming it. If the shaft shows wear, evaluate a nearby size or a design with an auxiliary lip.

If you need a seal equivalent to the 8721Pol or a nearby size, contact us on WhatsApp with the code and the dimensions of your equipment. We can look for alternatives in other brands, verify nearby sizes or advise you on the most suitable design according to the type of lubricant, the speed and the environmental conditions. MR Accesorios Industriales supplies seals and radial shaft seals with technical support.

MR Accesorios Industriales supplies this DBH seal as part of its line of seals and radial shaft seals. Send us the code 8721Pol or the dimensions 40x55x8 via WhatsApp and we will quote you with no obligation. Our technical team can help you confirm the application and suggest the best option for your equipment.