DBH 1131Pol radial shaft seal — 40 x 58 x 11

DBH 1131Pol 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 1131Pol and any equivalents.

A rotary shaft lip seal, the DBH 1131Pol keeps lubricant inside a housing and keeps dust, water and other particles out. Its Lx-R AH build pairs a main sealing lip with a secondary exclusion lip, which suits machinery that sees a moderate amount of contamination. Fit dimensions are 40 mm on the shaft, 58 mm in the housing bore and 11 mm of height, so it pays to compare those figures with the drawing before pulling the old part.

The seal sits in the DBH range under code 1131Pol. Shaft 40 mm, housing 58 mm, height 11 mm. In the Lx-R AH designation, the letters describe the lip arrangement: one lip does the sealing, a second one acts as a barrier against dirt from outside. That combination helps hold grease or oil where it belongs when the surroundings are not clean. DBH is one of the brands MR carries, so the part keeps its original marking and can be matched against the manufacturer's data sheet.

Seals of this size turn up in gearboxes, pumps, electric motors, line shafts and other process equipment. In each case the job is the same: close the gap where lubricant could escape and where contaminants could get in. Like any wear part, it ages. The lip hardens, picks up marks or loses its edge, and then you see weeping, drips or unusual noise. Whenever the machine is opened up, look at the lip and replace the seal if it has gone stiff or shows damage.

Installation decides how long the seal lasts. Inspect the shaft first: burrs, grooves or a worn track under the lip will ruin a new seal. The bore should be clean and free of nicks. Coat the lip with the same grease or oil used in the unit, then press the seal in squarely with a flat driver so the lip does not roll or distort. The 11 mm height sets how far it sits in the housing, so seat it fully rather than forcing it deeper. If the shaft is already grooved, a seal that positions the lip on a fresh area of the shaft avoids repeating the same failure.

Looking for an alternative? Send the code 1131Pol together with the shaft, housing and height measurements, and a photo of the old seal if you still have it. With that information the team can check other options in the DBH line or in another brand supplied. It also helps to mention the lubricant in use and the shaft speed, since both affect which lip compound is appropriate.

MR Industrial Accessories LLC supplies seals and oil seals for industrial applications, shipping to customers in the United States and Latin America. If this DBH 1131Pol is the part you need, or you want the dimensions confirmed before ordering, message the part number on WhatsApp or by email and the team will reply with a quote and help evaluate a compatible replacement.