DBH 6839 radial shaft seal — 41.28 x 53.75 x 7.92

DBH 6839 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 6839 and any equivalents.

When a rotating shaft needs its lubricant kept in and outside contamination kept out, a radial lip seal like the DBH 6839 does that job. The three figures that define it are a 41.28 mm shaft, a 53.75 mm housing and a 7.92 mm height, and it comes in the Mx design. MR Industrial Accessories supplies this brand to plants that need to keep equipment running.

The 6839 code belongs to the DBH line of radial shaft seals. Reading the size string is straightforward: the first value is the shaft it runs on, the second is the bore it presses into, and the third is how much axial room it takes up. In this case that means a shaft of 41.28 mm, a housing of 53.75 mm and a width of 7.92 mm. The Mx design refers to a build with a metal outer body and a sealing lip, made for rotating shaft positions.

How it works is simple. The elastomer lip rides against the shaft surface, while the outside diameter holds tight in the housing bore. That combination stops oil or grease from working its way out and blocks dust or water from getting in. Because the profile is compact, the seal fits where axial space is tight.

You will run into this type of seal on gearboxes, pumps, electric motors, compressors and power transmission equipment. In each case the purpose is the same: hold the lubricant where it belongs and shield bearings and gears from whatever is floating around outside. Agricultural machinery, process equipment and conveying systems are common places to find it, since those environments are hard on seals.

Before ordering, confirm that shaft, housing and height all match your assembly. The shaft should be ground and free of splines, otherwise the lip can be damaged. Lubricate the lip at installation with the same oil or grease the equipment uses, and press on the outer diameter with a proper tool rather than on the lip. If the housing bore is worn, a seal with a sleeve or a retaining adhesive may be the better route.

If you are looking for an equivalent, send the 6839 code or the exact dimensions of your application. We carry options from other brands and can point you toward the right one. We can also help you pick a lip material suited to your fluid and operating temperature.