DBH 9876 radial shaft seal — 21 x 40 x 10

DBH 9876 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 9876 and any equivalents.

The DBH 9876 is a radial shaft seal designed to fit a 21 mm shaft inside a 40 mm bore, with a height of 10 mm. It keeps lubricant in and contaminants out, protecting bearings and gears in rotating equipment.

This seal from DBH carries part number 9876 and uses design A 158, which specifies the lip geometry and metal case configuration for reliable sealing on rotating shafts. The dimensions—21 mm shaft, 40 mm housing, 10.00 mm height—are the key figures for replacement or cross-reference.

Common uses include gearboxes, speed reducers, pumps, electric motors, compressors, and belt or chain drives. It also fits agricultural machinery, earthmoving equipment, and process lines where oil or grease must stay inside the housing.

During installation, ensure the shaft is free of burrs and the housing is clean. Lubricate the lip and press the seal in using a tool that contacts only the metal case, not the lip. The 10.00 mm height and A 158 design must be matched for proper seating. If the shaft is grooved, consider a seal with an auxiliary lip.

For a replacement or equivalent, provide part number 9876 along with the shaft, bore, and height dimensions, plus a photo if possible. MR can suggest alternatives from the DBH line or other brands, confirming specifications before quoting.

To request a quote, contact MR via WhatsApp or email with the part number and dimensions. We support maintenance and purchasing teams across the US, Canada, Mexico, and South America.