DBH 6742 radial shaft seal — 17 x 40 x 8.5
- Brand
- DBH
- Category
- Seals
- Subcategory
- Radial shaft seals
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Description
DBH 6742 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 6742 and any equivalents.
A radial shaft seal such as the DBH 6742 keeps lubricant inside the housing and keeps dust, water and other particles out. It mounts in the bore and its lip rides on the rotating shaft, so it belongs to the group of parts replaced during service rather than repaired. The published dimensions are 17 mm for the shaft, 40 mm for the housing and 8.50 mm for the height, with an Lx design.
Reading the code is the fastest way to confirm the size. The designation 6742 from DBH corresponds to a seal with a shaft diameter of 17 mm, a housing diameter of 40 mm and a height of 8.50 mm. The Lx design indicates a single lip with a metal case, intended for lubricated rotating shafts. If the code on the old part is worn away, measure the three dimensions with a caliper and use those figures instead.
Before installation, inspect the bore and the shaft. The housing should be clean and free of burrs, and the shaft should show no scoring or wear across the area where the lip contacts it. The lip design also has to suit the speed, the temperature and the lubricant used in the equipment. On a worn shaft, a repair sleeve or a seal with an extra lip is worth considering, and the shaft surface needs the right hardness and roughness so the lip does not wear out early.
Applications for a seal this size are usually small and medium equipment: small centrifugal pumps, electric motors, compact gear reducers, gearboxes, mixers, fan shafts, compressors and general power transmission or process machinery. In every case the seal acts as a dynamic barrier between the lubricated side and the outside environment.
To get a quote, send the code 6742 along with the dimensions of the old seal, or the equipment where it fits and its brand. A photo of the part also helps when the marking is no longer readable. With that information, the team looks for the equivalent option in the brands carried and helps match it to the application.
Dimensions
- Shaft (d)
- 17mm
- Housing bore (D)
- 40mm
- Height (h)
- 8.50mm
- Design
- Lx
Frequently asked questions
- What size is the DBH 6742 oil seal?
- It is listed as 17 mm shaft diameter, 40 mm housing diameter and 8.50 mm height, with an Lx design. Confirm these three values against your equipment before ordering. If your old seal differs, send the actual measurements and we can look for an equivalent.
- How do I check that the 6742 seal fits my equipment?
- Compare shaft, housing and height first. Then consider the lubricant type, the working temperature and the shaft speed, since the lip design has to suit all three. A matching code or matching dimensions is a good sign, but if anything is unclear, ask with the equipment details.
- Can another brand be used in place of the 6742?
- Yes, provided the shaft, housing and height dimensions are the same and the lip design suits the application. Several brands are available, so send the code or the dimensions and we can quote an equivalent.