DBH 8381 radial shaft seal — 51 x 63 x 8.7

DBH 8381 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 8381 and any equivalents.

The DBH 8381 is a radial shaft seal from the DBH line, built to hold lubricant inside a housing and keep dust, water and particles out. It fits a 51 mm shaft, a 63 mm housing bore and an 8.70 mm height, and its Ms design identifies the construction used in this size. MR Industrial Accessories supplies this brand and helps you confirm the right seal for the job.

In this seal, the metal case carries an elastomer lip that presses into the housing while the lip runs against the shaft. The three values to check before ordering are shaft 51 mm, housing bore 63 mm and height 8.70 mm. The Ms designation refers to a specific build within the DBH range for retaining oil or grease on a rotating shaft. Once seated, the flexible lip follows the shaft and absorbs the small misalignments and vibration that come with normal operation.

You will find this type of seal wherever a shaft turns inside a housing and the lubricant has to stay separated from the outside: gearboxes, centrifugal pumps, electric motors, conveyor rollers, mixers and other power transmission equipment, as well as machine tools and agricultural or road machinery. Its job is to shield bearings and gears from dust, water and particles while stopping oil from leaking out. The seal only works if the shaft and housing match the published dimensions.

Selection starts with the shaft: it should sit within the recommended tolerance, and the housing needs the correct bore and depth for 51 x 63 x 8.70 mm. The contact area on the shaft must be ground, free of splines and burrs, and the lip should be lubricated before it goes in. Because the Ms design has its own construction details, press the seal in the correct direction and use an installation tool that pushes on the outer edge, never on the lip.

For an equivalent, send the code 8381 or the measured shaft and housing dimensions. With that information we can check alternatives in the DBH line or in the other brands we supply, keeping the dimensions and design type in mind. If space is tight, we can also tell you whether a different height or a design with a dust lip makes sense.

To get a quote for the DBH 8381, message us on WhatsApp with the code 8381 and the quantity you need. We come back with the technical and commercial details so your maintenance or project can move ahead.