DBH 8851/85 radial shaft seal — 25 x 41 x 8

DBH 8851/85 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 8851/85 and any equivalents.

When a shaft passes through a housing, the DBH 8851/85 keeps the lubricant where it belongs and keeps dust, water and grit out. The seal takes a 25 mm shaft, a 41 mm housing bore and an 8 mm width, and it carries the designation A 016. Gearboxes, pumps, motors and similar drive equipment running a shaft of that size are the usual homes for it.

The 8851/85 sits in the DBH line of radial shaft seals. Read the three figures in order: shaft 25.00 mm, housing 41.00 mm, width 8.00 mm. The A 016 designation describes how the lip and the outer body are shaped. The flexible lip rides against the rotating shaft while the outside of the seal presses into the bore, so oil and grease stay inside and outside contamination stays out.

You will find this size on gearboxes, centrifugal pumps, electric motors, rollers, and belt or chain drives. In each case the seal holds lubricant at the point where the shaft leaves the housing and shields the bearings or bushings behind it from dirt. Treat it as a wear item: once lubricant starts weeping or the support gets noisy, plan the replacement.

Before fitting a new seal, inspect the shaft for burrs and wear and make sure the bore is clean and round. Coat the lip with lubricant, then drive the seal in with a tube or spacer that bears on the outer edge, never on the lip itself. Shaft speed, running temperature and the lubricant in use all affect the choice; where vibration is heavy or dust is present, consider a version with an auxiliary lip or a dust guard.

If the exact size is hard to source, send the part number 8851/85, or the shaft, bore and width measurements together with a photo of the old seal. We can search the rest of the DBH range or another brand we supply. Details about the equipment and the fluid being retained help us narrow the options.

MR Industrial Accessories LLC supplies the DBH brand within its seals and oil seals range. For a seal going onto running equipment, message us on WhatsApp with 8851/85 and we will come back with a quote and any alternatives.