Radial shaft seal DBH 9904 — 40.00 x 69.00 x 15.40

DBH 9904 is a radial shaft seal reference, within Seals. Request a quote for 9904 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 9904 oil seal is a single-lip radial shaft seal that mounts on the shaft and seals against the housing to retain lubricant and block the entry of dust, water or particles. With a 40 mm shaft diameter, 69 mm housing diameter and 15.40 mm height, this specific size is used in gearboxes, pumps, electric motors and power transmission equipment where there is continuous rotation and contact with oil or grease. MR Accesorios Industriales carries this brand and advises you so you choose the right oil seal for your application.

The DBH 9904 is a radial shaft seal of A 345 design, with the dimensions shown on its product page: 40 mm shaft diameter (d), 69 mm housing diameter (D) and 15.40 mm height (h). The A 345 design corresponds to an oil seal with a sealing lip and an outer metal case, intended for rigid housings and rotating shafts. The 9904 designation identifies this size within the DBH line, and any question about tolerances or lip material is confirmed against the manufacturer's data sheet before quoting.

This type of oil seal is used in equipment where a shaft rotates inside a lubricated housing: gearboxes, centrifugal pumps, electric motors, conveyor rollers, mixers and belt or chain drives. It also appears in applications exposed to dust or water, where the lip must maintain dynamic sealing. If your equipment runs at high temperature or high peripheral speeds, it is advisable to verify the lip material and the type of fluid before defining the replacement.

To install an oil seal such as the 9904, the shaft must be clean, free of burrs and wear marks in the sealing area, and the housing must be in good condition and with the correct diameter. The oil seal is inserted perpendicular, without striking the lip, using a tube or spacer that rests on the metal edge. Before fitting it, lubricate the lip with the same oil or grease used in the equipment. If the shaft shows a marked track, consider a wear sleeve or a nearby size so as not to repeat the failure.

If you need an oil seal equivalent to the 9904 or a nearby size because the housing or shaft has a different diameter, send us the full part number, the dimensions measured with a caliper and a photo of the old oil seal. With that data we search the DBH line and other compatible alternatives. We can also check whether there is a variant with a double lip, with a spring or with a material resistant to higher temperatures, always confirming against the manufacturer's data sheet.

To request a quote for the DBH 9904 oil seal or ask about an equivalent size, send the part number by WhatsApp to MR Accesorios Industriales. We reply with the quote for the size and the alternatives that best fit your equipment. If you have doubts about the installation or the condition of the shaft, write to us and we will help you so the replacement goes right the first time.