DBH 8418 radial shaft seal — 40 x 55 x 9.5

DBH 8418 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 8418 and any equivalents.

The DBH 8418 is a radial shaft seal built for a 40 mm shaft, a 55 mm housing bore and a 9.50 mm height. Its Mx-Bidi lip geometry allows it to hold lubricant in and keep contaminants out in both directions of rotation. You will find this seal in pumps, motors, gearboxes, rollers and similar rotating equipment. MR Industrial Accessories supplies this brand and can help you confirm the correct size for your machine.

Key dimensions are shaft 40 mm, housing 55 mm, width 9.50 mm. The Mx-Bidi designation means the sealing lip is configured to work with either direction of rotation, which suits shafts that reverse or see alternating pressure. An elastomer outer body presses into the housing, while a spring keeps the lip in constant contact with the shaft surface.

These seals are used wherever oil or grease must stay inside and dust or water must stay outside. Typical locations include centrifugal pumps, electric motors, gearboxes, conveyor rollers, mixers and machine tools. They also serve as secondary seals in transmission cases, and in applications where shaft speed is moderate and temperatures stay within the normal range for elastomers.

Proper installation starts with checking the shaft for burrs or wear and making sure the lip contact area is clean and lightly lubricated. The housing bore must be in good condition and at the correct diameter so the seal presses in squarely without distortion. If the shaft shows a noticeable wear track, consider a seal that positions the lip on a different area. Speed, temperature and the fluid being retained all influence the final selection.

For an equivalent, provide the code 8418 or the three dimensions of your current seal: shaft, housing and width. With that information we can search for an alternative within the same brand or another line we carry. We can also advise whether the Mx-Bidi design fits your application or if a single-lip seal or another geometry would be more appropriate.

To request a quote for the DBH 8418 oil seal, send the code by WhatsApp to MR Industrial Accessories. We will respond promptly with the options that best match your equipment. We work with leading brands and support industry with power transmission and sealing components.