DBH 1172 radial shaft seal

DBH 1172 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 1172 and any equivalents.

Part code 1172 identifies a DBH radial shaft seal built to the A 378 design. It seats in a housing bore of 130.00 mm and stands 12.00 mm tall, so it fits equipment where that envelope is fixed. In service it keeps lubricant where it belongs and keeps dust, water and grit out of the bearing cavity. Maintenance and purchasing teams order it as a like-for-like replacement, which means the bore and height have to line up with the worn seal before anything else.

Reading the designation is the quickest way to avoid a wrong order. The 1172 number ties back to the DBH catalog entry, while the A 378 designation describes how the lip and metal case are formed. The two figures that matter at the bench are the 130.00 mm housing diameter and the 12.00 mm overall height. If either one is off, the seal will not seat correctly, so compare them against the original part or the equipment documentation.

Seals of this type show up in gearboxes, pumps, electric motors, rollers and similar rotating assemblies. Two jobs run at once: holding oil or grease inside the housing, and blocking contaminants from reaching the bearing. Once the lip wears, lubricant escapes and grit gets in, which shortens bearing life. That is why replacement calls for the same housing diameter and height, plus a lip material suited to the lubricant in use and the speed of the shaft.

Installation habits decide how long the new seal lasts. Keep the bore and the shaft clean, and drive the seal in with a tool that contacts the outer edge rather than the lip. A light coat of the same oil used in the equipment helps the lip slide over the shaft. Nicks in the bore or a grooved shaft will defeat the seal no matter how carefully it is fitted. Check that the outer diameter and height match the part being replaced and that the A 378 design clears the space available.

To get a quote on code 1172 or on the original part number, send a WhatsApp message. A photo of the old seal alongside the shaft and housing measurements speeds things up. We compare what you send against the options we carry and can suggest equivalents from the same brand or with comparable performance, so you are not left ordering a part that will not fit.