DBH 9459 radial shaft seal — 58 x 78 x 8

DBH 9459 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 9459 and any equivalents.

Part number 9459 from the DBH line is a radial shaft seal built to keep lubricant inside a housing while keeping dust, water and other contaminants out. It is a lip seal, so it works on a rotating shaft: the sealing edge rides against the shaft surface and presses against the bore of the housing. The Lx designation describes the lip and body geometry. Nominal dimensions are a 58 mm shaft, a 78 mm housing bore and an 8 mm width, which is a common size range for medium-duty rotating equipment.

Reading the size is straightforward. The first figure, 58 mm, is the shaft the lip contacts. The second, 78 mm, is the bore in the housing or cover that holds the outer diameter. The third, 8 mm, is the width of the seal, so it also tells you how deep the seat has to be. All three must agree with the equipment before the part goes in; a seal that fits the shaft but not the bore, or the reverse, will not seat correctly.

In service, this type of seal turns up wherever a shaft passes through a cover or support and oil or grease has to stay separated from the surroundings. Gearboxes, centrifugal pumps, electric motors, rollers, conveyors and transmission assemblies are all typical locations, and the same applies to machine tools and mixers. In plants that handle food, paper or water treatment, moisture and washdown chemicals make the choice of lip compound and spring more critical.

Selection starts with the three dimensions, but the shaft surface matters just as much. A scored, pitted or badly worn shaft will not let the lip seal properly, even when the size is right, so inspect that area before ordering. When the seal goes in, coat the lip with the same oil or grease the equipment uses, keep it square to the housing bore, and press it in without striking the lip. If you are matching an existing part, compare the lip profile and spring type as well as the size.

For a quote on the 9459, send the part number and the quantity you need. It also helps to include the old seal's shaft diameter, housing diameter and width, plus a photo of the lip face. With that information we can check for an equivalent in the DBH range or in the other seal lines we carry, and we can advise you when the application involves unusual temperature, speed or pressure.