V-rings
The profile of the V-ring seal has been designed to prevent the ingress of dust, dirt, water and oil, while keeping grease inside the system. V-Seal can be used to protect a wide range of bearings. It is sometimes used as a secondary seal to protect a primary seal (mainly on rotating shafts), which does not function effectively in a hostile environment.
V-rings are made up of two parts:
- The body that is tightened with the shaft
- The conical sealing lip that fits against the bearing surface
One of the most important parameters for sealing a V-ring is the surface roughness of the counterface. The speed of the rotating shaft and the nature of the various fluids to be sealed determine the roughness value of the counterface.
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Materials and approvals
Techné has in stock V-rings types VA, VS and VL in NBR and FKM. On request, Techné supplies other materials such as EPDM. Compounds for food applications are available on request (FDA and CE 1935/2004 approvals).
Applications
The VA profile is V-Seal's most standard profile. The VA profile is available for shaft diameters ranging from 3 mm to 2,000 mm.
The VA profile can be used in a wide range of applications, such as in combination with bearings, in electric motors and gearboxes.
The VS profile, with its pyramidal shape, ensures a firm hold of the seal on the shaft, preventing it from moving back. The VS profile is available for shaft diameters ranging from 5 mm to 200 mm.
The VS profile is mainly used for high-vibration applications such as agricultural machinery and trucks.
Type VL V-ring has a narrow axial cross-section, making it compatible with compact assemblies. The VL profile is available for shaft diameters ranging from 105 mm to 875 mm.
VL-seals are used for applications with restricted installation space, as well as in combination with labyrinth seals.
The VE profile is recommended for larger dimensions and can be attached to the shaft by strapping on its outside diameter. VE is available for shaft diameters ranging from 320 mm to 2,200 mm.
The VE is designed with a thick lip for heavy-duty applications and large industrial machines.
Coatings
In its Morancé workshop, Techné performs coatings on V-rings.
Each coating has a specific goal :
- T-Lub® coating facilitates assembly of V-rings, particularly in static applications.
- T-Coat® coating improves the natural sliding properties and service life of V-rings, especially in dynamic applications.
- T-Surf® coating keeps V-Seals clean and uncontaminated.
- T-Color® coating meets marking and identification needs by coloring V-Seals and improving their friction properties.