DBH 9129 radial shaft seal — 40 x 50 x 7

DBH 9129 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 9129 and any equivalents.

The DBH 9129 is a radial shaft seal that keeps oil or grease contained where a rotating shaft passes through a housing. It measures 40 mm at the shaft, 50 mm at the housing bore and 7 mm in height, and its Lx design identifies a lip seal with a spring. Gearboxes, pumps, motors and power transmission equipment rely on this type of seal to hold lubricant in and keep dust and water out. MR Industrial Accessories supplies this brand and can help you confirm the right seal for your application.

In an Lx seal, the elastomeric lip presses against the shaft while a spring maintains that contact, and the metal case is press-fitted into the housing bore. The result is a barrier between the lubricated side and the outside. Because the lip is a wear component, hardening or visible marks on it are early signs that leakage will follow.

You will find this seal in gearboxes, reducers, centrifugal pumps, electric motors, compressors and power transmission equipment, as well as in agricultural machinery, roller ways and conveyor systems. In every case it performs the same job. Where dust, water or pressure washing are present, shorter inspection intervals make sense, and you may want to look at versions with an auxiliary lip or dust lip.

Installation quality decides how long the seal lasts. The shaft must be clean, free of burrs and scratches, with a suitable sliding surface hardness and finish. Coat the lip with the same oil or grease used in the equipment before fitting. Drive the seal in perpendicular to the shaft, applying force on the outer diameter with a tube or press, never on the lip. A light pass of fine sandpaper removes any burr on the housing bore. Even a new seal will leak if it goes in wrong.

For an equivalent, share part number 9129 together with the shaft and housing dimensions. Knowing the brand and model of the equipment also helps. With that information we can look at other brands or our own product line while keeping the diameters and height unchanged. Where there is room, design or material options can be matched to the fluid and the working temperature.

MR Industrial Accessories supplies the DBH brand. To request a quote for this oil seal or to ask about another size, send part number 9129 and the dimensions on WhatsApp or by email. Our team replies promptly, suggests equivalents and helps you choose.