DBH 9901/85 radial shaft seal — 20 x 35.5 x 6

DBH 9901/85 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 9901/85 and any equivalents.

The DBH 9901/85 is a radial shaft seal, the kind of lip seal that sits in a housing bore and rides against a turning shaft. It keeps lubricant where it belongs and keeps dust, water and particles out. The A 100 design and its 20 mm shaft, 35.50 mm housing and 6.00 mm height suit assemblies built around small-diameter shafts. MR supplies this brand for industrial replacement and maintenance work.

Look at the code first. The 9901/85 designation identifies this seal within the DBH line, and the A 100 design describes how the seal itself is built. In service, the outer body stays fixed in the housing cavity while the lip presses on the rotating shaft, which is what creates the sealing action.

The three dimensions to match are shaft 20 mm, housing 35.50 mm and height 6.00 mm. Because the seal is compact, it turns up in gearboxes, pumps, electric motors, transmission shafts and process equipment where oil or grease has to stay contained and outside contamination has to stay out. Fans, agitators, low- and medium-power mechanisms and general plant machinery are common homes for it. It also works well as a replacement during preventive maintenance on any assembly that already has a defined housing cavity.

Selection starts with those three values: confirm the shaft diameter, the housing bore and the height against what is on the product page. Then inspect the shaft itself. A worn surface or a groove where the lip contacts the shaft will leak even with a new seal in place. During installation, lubricate the lip, keep the seal square to the housing and avoid striking it. If the equipment runs hot or fast, ask MR about a suitable alternative.

For an equivalent seal, send code 9901/85 along with the shaft and housing dimensions and a photo or sample of the old part. That is enough for us to search the same brand or another line for something that fits the mounting. We can also advise on housings with a shoulder or shafts that show wear.

Quotes are handled by part number through WhatsApp or email, and the team replies promptly. Send the code and we will come back with the options that suit your equipment.