DBH 1178 radial shaft seal

DBH 1178 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 1178 and any equivalents.

The DBH 1178 is a radial shaft seal built around the A 378 design. It measures 80 mm at the housing and 10 mm in height, so it fits bores where there is little axial room but a rotating shaft still needs proper sealing. MR Industrial Accessories LLC supplies this seal line to maintenance and purchasing teams in the United States and Latin America. If you want to confirm a replacement or check an alternative, send the code over and the team will take it from there.

In service, a seal of this type keeps oil or grease where it belongs and keeps dust, water and fine particles out. The elastomeric lip rides against the shaft while the metal case holds the part firmly in the housing bore. That combination is what makes the DBH 1178 useful in gear reducers, pumps, electric motors, conveyor rollers and similar transmission equipment, as long as the lip material suits the speed and temperature of the application.

Typical installations include agricultural machinery, process equipment and conveying systems, wherever a shaft passes through a housing and leakage has to be controlled. Before specifying a seal, check the peripheral speed, the working temperature and the fluid being retained, since those three factors drive the final choice of lip compound and design.

Installation matters as much as selection. The bore should be clean, free of burrs and with the right surface roughness. Lubricate the lip before the shaft goes in, and use a driver that pushes on the outer diameter rather than the lip. If the shaft shows grooves or wear, a repair sleeve or a shifted mounting position may be needed.

For an equivalent, share the measured shaft diameter, the housing bore and the height of the seal you are replacing, plus the code or a photo of the part. The team reviews options in the same brand and in other lines, then sends a quote. Seals are part of a broader range that also covers bearings, mounted units, power transmission components, lubrication and maintenance tools.

If you already have code 1178 or need to match a similar seal, message the team and they will provide the technical details you need to decide, including advice on installation tools and compatible lubricants.