DBH 6404 radial shaft seal — 48.3 x 85.85 x 8

DBH 6404 belongs to radial shaft seal, part of our Seals range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 6404 and any equivalents.

The DBH 6404 is an Ls-type radial shaft seal that keeps lubricant in and contaminants out where a shaft turns inside a housing. With a 48.30 mm shaft diameter, an 85.85 mm housing diameter and an 8.00 mm height, it fits assemblies that have only a narrow axial space but still need a dependable barrier against dust, water and particles.

You identify this seal by the code 6404. The three dimensions to check are shaft 48.30 mm, housing 85.85 mm and height 8.00 mm. The Ls designation means a single sealing lip with a spring, built for rotating shaft service. DBH is one of the brands MR supplies, so the replacement keeps the same geometry and compound and seats directly in the existing bore.

Seals of this type are common in gearboxes, centrifugal pumps, electric motors, spindles and transmission equipment, where escaping oil or grease would harm bearings and where dirt must be kept out. The 8.00 mm height suits machined cavities with limited room, and the lip and spring combination works at moderate shaft speeds.

For a correct installation, confirm the shaft diameter is within tolerance and that the surface under the lip is smooth and free of burrs. The bore must match the 85.85 mm housing diameter and the 8.00 mm depth. Coat the lip with the same oil or grease used in the machine, then press the seal in with an installation tube so the spring is not displaced. A worn shaft may call for a repair sleeve or a different size.

If you are looking for an equivalent, the simplest route is to send the code 6404 or the measured shaft and housing dimensions. From that information we can check the DBH line and the other brands we carry for a compatible option. We can also tell you whether the Ls design suits your operating conditions or whether another lip profile or material would be a better choice.

To get a quote on the DBH 6404 oil seal, send the part number to MR Industrial Accessories through WhatsApp or email. Our team answers promptly, suggests equivalents and helps you select the right seal for your equipment.