DBH 9739 radial shaft seal — 19 x 25.4 x 3.2

DBH 9739 is a reference of radial shaft seal, within Seals. Request a quote for 9739 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 9739 oil seal is a single-lip radial seal designed for rotating shafts with a 19 mm diameter. Its function is to retain lubricant inside the housing and prevent the ingress of dust, water or particles that could damage bearings and bushings. It is press-fitted into a 25.40 mm bore and is only 3.20 mm high, making it suitable for tight spaces. It is a common replacement part in industrial and automotive equipment.

This item is a DBH radial shaft seal, identified by the code 9739. Its dimensions are shaft (d) 19 mm, housing bore (D) 25.40 mm and height (h) 3.20 mm. The Mt design corresponds to a single-lip configuration with a spring, intended for lubricated rotating shafts. The 19 mm shaft diameter and the reduced 3.20 mm height allow it to be mounted in shallow housings. DBH is a brand that MR carries, so it is available under its exact designation.

Typical applications for this seal include gearboxes, centrifugal pumps, electric motors, compressors and transmission equipment. It is also used in agricultural machinery, conveyors and hydraulic systems where shafts rotate inside a crankcase. Its compact size makes it common in small mechanisms such as rollers, pulleys and fan shafts. In all cases, the purpose is the same: to confine the oil or grease and protect the bearings from the environment.

For correct installation, check that the shaft measures 19 mm and has a surface free of burrs and scratches; the same applies to the 25.40 mm housing bore. Lubricate the lip with the same grease or oil used in the equipment before inserting it, and install the seal with a support tube that presses on the outer diameter, never on the lip. The 3.20 mm height should sit flush or slightly recessed. If the shaft shows wear, consider a repair sleeve or an alternative size.

If you need a seal equivalent to the DBH 9739, the most practical approach is to send us the code 9739 and the shaft, housing bore and height dimensions. With that data we can search other brands or series that perform the same function. We can also advise you if space is critical or if the Mt design does not suit your application.

To request a quote for the DBH 9739 seal, send us the code via WhatsApp along with the quantity you need. If you have doubts about the size or design, attach a photo of the old seal or the dimensions measured with a caliper. That way we can quote it and give you alternatives without delay. We are in Buenos Aires, Argentina, and we ship throughout the country.