DBH 8721Pol radial shaft seal — 40 x 55 x 8

DBH 8721Pol 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 8721Pol and any equivalents.

For rotating shafts that need reliable lubricant retention and contaminant exclusion, the DBH 8721Pol offers a double-lip design in a compact 40x55x8 mm envelope. This radial shaft seal suits gearboxes, pumps, electric motors, and similar industrial drives.

The 8721Pol belongs to DBH's seal line and uses an Lx-Bidi lip arrangement. The primary lip holds oil or grease in place, while the secondary lip blocks dust, water, and other particles. Key dimensions are shaft 40.00 mm, housing 55.00 mm, and height 8.00 mm.

This seal fits common rotating equipment such as speed reducers, centrifugal pumps, compressors, fans, mixers, and conveyors. In these applications, it prevents leakage and protects bearings from dirt and moisture, especially in moderately dusty or humid environments.

Before ordering, confirm your shaft diameter matches 40.00 mm and the housing bore accepts 55.00 mm with a depth of at least 8.00 mm. The shaft surface should be smooth and free of nicks or burrs. During installation, apply a light film of the operating lubricant to the lip and use a proper driver to press the seal evenly without distorting it.

If you need an alternative to the 8721Pol, send the code and your equipment dimensions to MR via WhatsApp or email. The team can check equivalent seals from other brands and help you choose based on lubricant type, shaft speed, and environmental conditions.

MR supplies DBH radial shaft seals with technical guidance. To request a quote for the 8721Pol or the 40x55x8 size, contact us through WhatsApp or email with your part number. Our staff will respond promptly and assist with selection.