DBH 5177Sil radial shaft seal — 40 x 55 x 10

DBH 5177Sil 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 5177Sil and any equivalents.

The DBH 5177Sil is a radial shaft seal that sits in the housing and works against a rotating shaft to keep lubricant in and contaminants out. With a 40 mm shaft, 55 mm housing and 10 mm height, and its Lx design, it is a common replacement in gearboxes, pumps, electric motors and transmission equipment that run on 40 mm shafts. MR Industrial Accessories supplies this brand and can help you confirm the correct seal for your application.

This seal belongs to the DBH line and carries the part number 5177Sil. Its nominal dimensions are shaft 40.00 mm, housing 55.00 mm, height 10.00 mm. The Lx design is a single-lip seal with a spring, made for rotating shafts that are lubricated and do not see high differential pressure. The 5177Sil designation covers the geometry and lip material, so before you order, compare these dimensions with your drawing or the original part to confirm fit.

Seals of this size are found in gearboxes, speed reducers, centrifugal pumps, electric motors, spindles, and belt or chain drives. In each case the seal does two jobs: it stops oil or grease from escaping the bearing area, and it keeps dust, water and particles from getting in. Because it is a wear part, it is replaced when you notice lubricant loss, unusual noise or vibration, or dirt inside the housing.

When you install the seal, check the shaft for burrs, deep scratches or wear that would stop the lip from making even contact. The housing should be clean and free of old sealant, and it helps to lubricate the lip with the same oil or grease used in the machine before you press it in. Use a proper tool and apply pressure evenly on the outer ring, never on the lip. If the shaft has a visible groove, you can set the seal slightly off its original position so the lip runs on a fresh surface.

If you need an alternative, send the part number 5177Sil along with the shaft, housing and height dimensions, plus a photo or drawing of the part. With that information we can look for options in the same radial shaft seal category while keeping the design and lip type. We can also assist if the original seal has a special geometry or if the housing has been machined and needs a different size.

To request a quote for the DBH 5177Sil oil seal, contact MR Industrial Accessories on WhatsApp with the part number and dimensions. We will reply with the quote and the alternatives that fit your equipment, and we can advise you on installation and selection.