DBH 9631/85 radial shaft seal — 39.9 x 45.8 x 5.5/7.2

DBH 9631/85 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 9631/85 and any equivalents.

Seal 9631/85 belongs to the DBH line and works as a radial shaft lip seal, holding lubricant inside the assembly while keeping dust and other contaminants out. Its geometry suits rotating equipment where there is little room along the axis: the shaft seats at 39.9 mm, the housing bore at 45.8 mm, and the overall height runs 5.50/7.20 mm. MR Industrial Accessories supplies this brand and can help you confirm the size before you order.

Reading the designation helps when you compare it against a drawing. The 9631/85 number identifies the item, while the A 266 design describes a metal-cased profile with a sealing lip that presses into a cylindrical bore. The two height values, 5.50 mm and 7.20 mm, point to a main lip plus a secondary section that shields the sealing edge from dirt. Put the three measurements in order — shaft 39.9 mm, housing 45.8 mm, height 5.50/7.20 mm — and you have what you need to check the cavity.

Sizes in this range turn up on gearboxes, centrifugal pumps, electric motors, transmission shafts and process machinery. The job is always the same: keep oil or grease where it belongs and stop outside particles from reaching the bearing. Since the shaft dimension sits just under 40 mm, this seal fits medium-power units that call for dependable sealing without much radial space.

Before installing, confirm that the shaft and bore match the values above and that the cavity is deep enough for the 5.50/7.20 mm height. Seat the seal with the correct driver, keep the lip free of impact damage, and fit it over a clean, lightly lubricated shaft. Runout and surface finish also matter: a smooth shaft without burrs gives the lip a better chance of lasting.

For a quote on seal 9631/85, send the part number or simply your shaft and housing dimensions. Our team can also review alternatives within the same brand or other lines we carry. Details such as the fluid, operating temperature and speed help us point you to the right option. Quotes are handled by WhatsApp or email, and we answer promptly.