DBH 8712Pol radial shaft seal — 22 x 40 x 8

DBH 8712Pol 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 8712Pol and any equivalents.

The DBH 8712Pol is a radial shaft seal built for a 22 mm shaft running in a 40 mm housing bore, with an 8 mm height. It keeps oil or grease where it belongs and blocks dust, water and other particles from getting in and wearing the moving parts. You will find this size in gearboxes, pumps, motors and similar rotary equipment. MR Industrial Accessories supplies the DBH line and can help you confirm the size before you order.

Read the code first: 8712Pol is the size and construction reference inside the DBH line, and this seal uses the Kx-R-H design, a lip seal with a reinforced body for lubricated rotating shafts. The three figures to match are shaft 22 mm, housing bore 40 mm, height 8.00 mm. If any of them is off, the seal will not seat or seal correctly, so measure the shaft and the bore before fitting.

These seals turn up in gearboxes, centrifugal pumps, small electric motors, rollers and transmission shafts. The job is always the same: a shaft spins inside a stationary housing, and the lip holds the lubricant in while keeping the outside environment out. That also makes it a good fit for equipment that sees water splash or airborne dust, since the lip stops contaminants before they reach bearings and bushings.

Selection and installation matter as much as the size. The shaft surface should be smooth, without grooves or burrs, and hard enough to resist wear. The housing needs the correct bore and depth. Lubricate the lip before you press the seal in, and use a flat driver so the spring and body stay intact. If the shaft is already worn, a repair sleeve or a different size may be the better route.

For an equivalent, send the 8712Pol number along with your shaft and housing measurements. A photo of the old seal or the assembly drawing also works. We check the designation against the manufacturer's data and suggest options within the same series or from other brands we supply, so you do not end up with a part that will not fit.

To get a quote on this DBH 8712Pol radial shaft seal, message us on WhatsApp with the part number and the quantity you need. If you are unsure about the size, ask before ordering and we will go over the shaft and housing dimensions with you.