Radial shaft seal DBH 6643Sil — 17.50 x 28.50 x 6.00

DBH 6643Sil is a radial shaft seal reference, within Seals. Request a quote for 6643Sil via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 6643Sil radial shaft seal is a lip seal that mounts on a 17.50 mm shaft and fits into a 28.50 mm bore, with a height of 6.00 mm. Its function is to retain lubricant inside the assembly and block the entry of dust, water or particles, working against the rotating shaft. It is used in gearboxes, pumps, electric motors and power transmission equipment. MR Accesorios Industriales carries this official brand and helps you confirm the exact size before requesting a quote.

This item is a radial shaft seal, identified by the DBH designation 6643Sil. The dimensions listed on its product page are: shaft diameter 17.50 mm, housing diameter 28.50 mm and height 6.00 mm. The indicated design is Lz, which corresponds to a single-lip configuration with spring. The seal combines an elastomeric body with a sealing lip and, depending on the series, may include a metal case that gives it rigidity for press fitting into the housing.

Typical applications for a seal of these dimensions appear in equipment with small-diameter shafts: electric motors, centrifugal pumps, gearboxes, compressors, machine tools and power transmission systems. It is also found in agricultural implements and material handling equipment. In all cases it performs the same function: separating the lubricated side from the environment, preventing oil or grease loss and protecting bearings and gears from contaminant ingress.

To select and install a seal, three things must be verified: that the shaft diameter matches the indicated one, that the housing has the correct size and that the height is compatible with the cavity depth. The lip must be lubricated before installation and the shaft must not have burrs or splines that could damage it. Rotation speed, operating temperature and the type of fluid determine the lip material, so it is advisable to confirm these data with the manufacturer or supplier before installing.

If you need a nearby size, a different material or an equivalent from another brand, send us the part number 6643Sil along with the shaft, housing and height dimensions. You can also send a photo of the old seal or the assembly drawing. With that data we verify the designation, the lip design and the alternatives available in the DBH line that MR carries, and we send you the quote by WhatsApp.

MR Accesorios Industriales has more than 80 years in the industrial sector and carries the DBH brand as part of its line of seals and radial shaft seals. If the seal you are looking for does not exactly match this size, write to us anyway: we can guide you toward another designation in the same family or toward an equivalent product. Quotes are handled by WhatsApp with the item part number and the dimensions you need.