DBH 5251 radial shaft seal — 19 x 35 x 10

DBH 5251 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 5251 and any equivalents.

The DBH 5251 is a radial shaft seal of the single-lip type, sized for a 19 mm shaft, a 35 mm housing bore and a 10.00 mm width, with Lx construction. It keeps lubricant in and contaminants out on small gearboxes, pumps, electric motors and similar power transmission equipment. MR Industrial Accessories supplies this seal as part of its seals line.

The designation 5251 belongs to the DBH radial shaft seal series. The published dimensions are shaft 19 mm, housing 35 mm, width 10.00 mm, and the design is Lx. In the Lx style, a single sealing lip is bonded to an outer metal case; the case presses into a rigid housing, while the lip rides on the shaft with slight interference to create the dynamic seal. This makes it a common replacement item in routine maintenance.

Seals of this size turn up in small gearboxes, worm reducers, low-power centrifugal pumps, medium electric motors, and belt or chain drives. They also appear in machine tools, small screw compressors, and process equipment where an oil sump must be kept separate from dust or moisture. In each case the seal does two jobs: it stops lubricant from escaping and blocks particles and water from reaching bearings or gears.

Installation calls for a few checks. Inspect the shaft first: burrs, deep scratches or a worn lip track will damage a new seal quickly. Clean the housing bore, then lubricate the lip with the same oil or grease used in the machine. Press the seal in squarely, applying force on the metal case only, with a tube or driver that does not touch the lip. If the housing has a shoulder, seat the seal to the correct depth so the lip runs on the intended track. When selecting a replacement, always compare all three dimensions and the design type.

To request an equivalent, send the code 5251 plus the shaft, housing and width measurements taken from the old part or drawing. With that information we look through the DBH line and other brands we carry for a seal that matches in diameters, width and design. We can also tell you whether the Lx design suits your application or whether a different lip profile or a seal with a dust guard would be a better fit.

MR Industrial Accessories supplies the DBH brand within its seals and oil seals catalog. If you have the part on hand, send code 5251 by WhatsApp for a quote. If not, send the dimensions and the equipment type, and we will help you identify the correct seal.