DBH 8731 radial shaft seal — 22.22 x 35 x 6.4

DBH 8731 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 8731 and any equivalents.

Part code 8731 from DBH is a radial shaft seal built to keep lubricant inside a housing and keep contaminants out. Its Lx configuration uses a single lip with a spring, and the dimensions are 22.22 mm for the shaft, 35.00 mm for the housing bore and 6.40 mm for the height. MR Industrial Accessories supplies this seal through its seals and oil seals line.

Reading the number is straightforward: 8731 is the DBH reference, and the three figures that follow describe where the seal sits. The lip rides on a 22.22 mm shaft, the outer case presses into a 35.00 mm bore, and the 6.40 mm height is the axial space the seal takes up. Because that section is narrow, the part suits assemblies where there is little room along the shaft. The Lx designation points to a single sealing lip with a spring, meant for rotating shafts that stay lubricated.

Gearboxes, pumps, electric motors, compressors and machine tools are common homes for this kind of seal, and the same is true in agricultural, road and process equipment. In each case a shaft turns inside a lubricated housing, and the seal has to hold the oil or grease in place without adding drag. Doing that job also keeps bearings and gears clear of dust, water and particles, and stops leaks that would otherwise soil the machine and lead to repeated repairs.

Sizing starts with the three measurements: shaft diameter, housing bore and height. Beyond that, it pays to look at how fast the shaft turns, the temperature at the seal and which lubricant is used, since the elastomer has to be compatible with it. During fitting, clean the shaft race, put a little lubricant on the lip, and slide the seal in with a tube or bushing so the sealing edge is not nicked. A shaft with wear or scratches can compromise the seal even when the dimensions are right.

If the 8731 is not the exact match you need, our team can search the same radial shaft seal category for an alternative. Send the shaft, housing and height figures, or simply the code stamped on the old seal. A photo of the part and of the mounting area is also useful. With that information we review the options among the brands we carry and tell you which one suits your equipment.

MR Industrial Accessories handles seals and oil seals for a range of industrial duties. To request a quote for the DBH 8731, message us on WhatsApp or by email with the code. We will come back with the options available in that size, and you can also ask about bearings, housings, transmission components and lubricants from our catalog.