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

DBH 5311Vit 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 5311Vit and any equivalents.

When you need to close the gap between a turning shaft and its housing so lubricant stays in and contaminants stay out, the DBH 5311Vit radial shaft seal is the part to specify. It fits a 20 mm shaft, a 42 mm bore and a 10 mm width, and its Lx design denotes a single lip with a spring. You will find this seal in gearboxes, pumps, motors and other power transmission equipment. MR Industrial Accessories supplies this brand and helps you confirm the correct size for your machine.

Start by reading the designation. DBH 5311Vit identifies the seal; the dimensions follow the usual shaft x housing x width order, so 20 mm is the shaft, 42 mm is the housing bore and 10 mm is the height. The Lx code tells you the seal has one lip and a spring, a configuration intended to hold lubricant in and keep dust, water and vapors out. The elastomeric lip contacts the rotating shaft while the metal case presses into the housing. Because it is a wear part, plan to replace it whenever you see lubricant weeping or dirt working its way in.

This size shows up in gearboxes, centrifugal pumps, electric motors, speed reducers, drive shafts and process equipment. It also appears in machine tools, washing systems and conveyors. Where the equipment runs with strong vibration or high temperature, confirm that the elastomer suits the fluid and the operating conditions before you install the seal.

Installation decides how long the seal lasts. Verify the shaft diameter is within tolerance and free of burrs, and that the housing bore and depth are correct. Put a light film of lubricant on the lip, then drive the seal in with a tube that presses on the metal case, never on the lip. Shaft runout and bearing clearance also affect service life. If the old seal failed because the shaft is worn, a repair sleeve may be the better route before you fit the same size again.

Need an equivalent? Send the complete part number, the shaft, housing and height dimensions, and a photo of the old seal. With that information we can search the DBH series or other brands we supply, and we can advise on lip design and elastomer material for your fluid and working temperature.

To request a quote, send the part number and dimensions by WhatsApp or email. Our team replies promptly and can suggest equivalents and help you choose.