DBH 9963/85 radial shaft seal — 31 x 43 x 10.3

DBH 9963/85 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 9963/85 and any equivalents.

The DBH 9963/85 is a radial shaft seal that keeps lubricant in and contaminants out where a shaft passes through a housing. Its dimensions are 31 mm shaft, 43 mm housing and 10.30 mm height, and it uses design A 349. This size appears often in gearboxes, pumps and other power transmission equipment, and MR Industrial Accessories LLC supplies it within its line of seals and oil seals for maintenance and replacement work.

The designation 9963/85 identifies the part, and design A 349 describes the construction geometry within the DBH line. To read the size, work in this order: shaft 31 mm, housing 43 mm, height 10.30 mm. The lip runs against the 31 mm shaft, the body presses into a 43 mm bore, and the 10.30 mm height is the usable depth of the seat. Check those three values against the old seal before ordering.

Seals of this size are common in gearboxes, gearmotors, centrifugal pumps, mixers, fans and power transmission equipment. They also appear on machine tool shafts and in process equipment with continuous rotation and lubrication. In every case the job is the same: hold oil or grease inside the assembly and block dust, water and particles from entering along the shaft.

During installation, inspect the 31 mm shaft for burrs or marks on the sealing track and confirm the 43 mm housing is clean and not deformed. Lubricate the lip before pressing the seal in and seat it square so the edge is not damaged. When selecting a replacement, consider rotation speed, working temperature and lubricant type. If the shaft is worn, an offset lip or a repair sleeve may be worth evaluating.

To quote an equivalent, send part number 9963/85 with the shaft, housing and height dimensions, plus the fluid type and working temperature. A photo of the old seal and of the seat also helps. MR Industrial Accessories LLC serves customers in the United States, Canada, Mexico and South America, and can suggest equivalents and help confirm the right choice.

Send the part number by WhatsApp or email to request a quote. If you are unsure about the size or design, ask and the team will help you confirm that the part fits your equipment.