DBH 5031Sil radial shaft seal — 28 x 40 x 7

DBH 5031Sil 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 5031Sil and any equivalents.

The DBH 5031Sil is a radial shaft seal built to keep lubricant where it belongs and to keep dust, water and particles out of rotating assemblies. It measures 28.00 mm at the shaft, 40.00 mm at the housing bore and 7.00 mm in height, and it comes in the Lx design. You will find this type of seal in gearboxes, pumps, motors and reducers, where a worn lip can lead to oil loss and bearing damage.

Reading the designation helps you match the part to the application. The 5031Sil code identifies this seal, and the three figures that matter on the bench are the 28.00 mm shaft diameter, the 40.00 mm housing diameter and the 7.00 mm height. Lx refers to a lip-and-spring configuration made for rotating shafts that run with oil or grease. The elastomer does the sealing work while the metal case holds the shape and resists wear during continuous operation.

Typical service includes gearboxes, centrifugal pumps, electric motors, compressors, transmission shafts and process equipment. In each case the seal separates the lubricated side from the environment, so the bearings stay clean and the oil stays inside. It also suits assemblies where internal and external pressure differ slightly.

Before installation, confirm the 28 mm shaft and 40 mm bore, and allow the full 7 mm width. The shaft should be ground and free of burrs, and the housing clean and undistorted. Apply lubricant to the lip, then drive the seal in with a tool that contacts the outer diameter only, never the lip. For high-speed or high-temperature service, ask about other material options.

If you are replacing a DBH 5031Sil, send the complete part number along with the shaft, housing and height measurements, and a photo of the removed seal when you have one. With that information we can look at other brands or series that do the same job, and we can tell you whether the space allows a taller or shorter seal.

To request a quote or check an equivalent, send the part number by WhatsApp or email. If the designation or the design is unclear, our team will help you identify the correct seal for your equipment.