DBH 5311Sil radial shaft seal — 20 x 42 x 10

DBH 5311Sil 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 5311Sil and any equivalents.

The DBH 5311Sil is a radial shaft seal designed for 20 mm rotating shafts, fitting into a 42 mm housing with a 10 mm height. Its primary role is to keep lubricant in and contaminants out, protecting bearings and bushings from premature wear. Press-fitted into the housing, it relies on a ground, lubricated shaft surface for effective sealing. This seal is a common replacement in electric motors, pumps, reducers, and other power transmission equipment.

This seal features an Lx design: single lip with a spring, intended for permanently lubricated rotating shafts. The code 5311Sil identifies the DBH product, and dimensions are confirmed against the manufacturer's page when quoting. Shaft diameter is 20 mm, housing diameter 42 mm, and height 10 mm.

Typical uses include low- and medium-power electric motors, centrifugal pumps, gearboxes, fan shafts, and belt- or chain-driven equipment. The seal prevents oil or grease leakage and blocks dust, moisture, and particles. It also suits machine tools, conveyors, and agricultural machinery exposed to contaminants.

For installation, ensure the shaft is free of burrs and the sealing surface is polished. Lubricate the lip with the equipment's oil or grease. The housing must be clean and undeformed. Insert the seal perpendicular to the shaft with uniform pressure, avoiding impact on the lip. If the shaft is worn, a seal with greater height can shift the contact track.

To find an equivalent or different size, provide the code 5311Sil or the dimensions (shaft, housing, height) and application type. We can suggest alternatives within the DBH line or other brands we carry, matching design and material. Share assembly details and working conditions for tailored advice.

Request a quote by sending the code 5311Sil via WhatsApp to MR. Our team responds promptly with purchasing options and can assist with selection or installation questions.