DBH 8230 radial shaft seal — 15 x 22 x 4.5

DBH 8230 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 8230 and any equivalents.

The DBH 8230 is a radial shaft seal built around a single lip with a spring, sized for a 15 mm shaft, a 22 mm housing bore and a 4.50 mm height. Its job on a rotating shaft is to hold the lubricant in and keep dust, water and particles out, which is what protects the bearings and bushings nearby. The seal presses into the housing cavity and its lip rides against the shaft. Treat it as a wear item: once it starts weeping oil or the shaft shows movement, it is time to replace it.

Read the size off the code before you order. Shaft 15 mm, housing 22 mm, height 4.50 mm, and the 8230 block within the DBH line pins down that exact size. The Ls designation describes a single lip with a spring, a standard radial sealing configuration rather than a special type, chosen where axial room is tight and no second dust barrier is needed. Installation is an interference fit in the housing, with the lip resting lightly on the shaft surface.

Typical homes for this seal include small electric motors, centrifugal pumps, reducers, gearboxes and other power transmission equipment, plus machine tools, compressors and lubrication systems where a rotating shaft has to be isolated. In food and process plants, the deciding factor is usually the lip material, since it has to tolerate the fluid being sealed and the temperature at which the equipment runs. A seal that fails here takes the adjacent bearings and bushings with it.

Before fitting, inspect the shaft for burrs, nicks or marks and confirm the sealing surface is polished. Put a film of lubricant on the lip, then drive the seal in with a support tube that bears on the outer edge only, never on the lip itself. The cavity needs to be 4.50 mm deep to seat the seal correctly. If the shaft is already worn, a seal with the lip positioned at a different point can be an option. Speed, temperature and lubricant type all feed into the final selection.

When you request a quote, the part number 8230 or the three dimensions are enough to get started. A drawing or a photo of the seal you are replacing works just as well. From there we can cross to alternatives within the same series or from other brands we supply, comparing tolerances and design rather than matching the number exactly. MR Industrial Accessories serves customers throughout the United States and in several Latin American countries, and our team can also help with installation and seal selection.