DBH 6643Pol radial shaft seal — 17.5 x 28.5 x 6

DBH 6643Pol 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 6643Pol and any equivalents.

The DBH 6643Pol is a radial shaft seal designed to retain lubricant and exclude dust, water, and particles in small rotating equipment. With an Lz design—single lip with spring—and dimensions of 17.50 mm shaft, 28.50 mm housing, and 6.00 mm height, it fits applications where axial space is tight.

This seal belongs to the DBH line and carries the code 6643Pol. The three key dimensions are shaft 17.50 mm, housing 28.50 mm, and height 6.00 mm. The Lz designation indicates a single lip with a spring, intended for lubricated rotating shafts. Because the code itself often reflects these dimensions, always confirm that your shaft and housing match the published values before ordering a replacement.

Seals in this size range are common in small gearboxes, low-power electric motors, centrifugal pumps, compressors, fan shafts, and transmission components. They also appear in machine tools, packaging equipment, and compact hydraulic systems. Their job is consistent: keep oil or grease inside the assembly and block contaminants that would otherwise accelerate wear on bearings and gears.

For proper installation, clean the housing and shaft, inspect for burrs or deep marks, and lubricate the lip with the same oil or grease used in the equipment. Press the seal in squarely, avoiding direct impact on the lip; use a tube or shim that contacts only the outer diameter. If the shaft shows wear, a repair sleeve may be needed. Seal selection depends on speed, temperature, and fluid type, so confirm these details with the manufacturer.

If you need an equivalent, send the code 6643Pol or the shaft, housing, and height dimensions by WhatsApp. Our team checks your request against the manufacturer's data and suggests alternatives from the same brand or another line when the application allows. The more information you provide—equipment type, rotation speed, and fluid—the more accurate the recommendation.

MR Industrial Accessories supplies the DBH brand as part of its seals and radial shaft seals range. If you are unsure about compatibility, contact us on WhatsApp with the code and dimensions; we will provide the available technical information and handle the quote for the part that best fits your needs.