V-rings - Axial seals for shafts and bearings.The function of a V-seal is to exclude dirt, water or other aggressive media from entering bearing housings while also retaining grease. The V-seal stretches over the shaft and assumes a tight interference fit. The V-seal rotates with the shaft causing the lip to rotate against the housing or bearing. As the speed increases, friction decreases due to centripetal force. Morgan V-seals Includes VA style, VAX style, VL style, VE style, VS style. Our this kind of products are purchased by Primetal Technology USA LLC which is the subsidiary company of Siemens.
The VS profile is a rubber facial effect V-Ring composed of a conical rear face with a large body with a low radial section. Type S V-rings with bevel back serves as a pressure-less, axial rod seal which is clamped on a shaft. The flexible sealing lip seals a counter face at a right angle to the shaft, preventing dirt, dust and splash to enter the construction. Available in sizes from .180″ (4.5mm) shaft to 8.270″ (210mm). Commonly used in agricultural and automotive applications.
Excellent chemical compatibility and wide temperature range, depending on the type of material chosen
Firm grip on the shaft
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NBR 60 - 70 Shore A
FKM 60 - 70 Shore A
Loss of powerThe sealing lip of a V'Ring exerts such a low pressure on the contact surface area that the loss of power resulting from it is also low. The variations in power loss depend on the circumferential speed as well as the diameter of the axis in rotation, as shown in the graph below. At speeds greater than 11.0 m/s, the sealing lip has a tendency to detach itself, as the centrifugal force is greater.
Shaft designConsidering that the V'Ring is fitted and tightened by expansion on the shaft, it is driven into rotation with the shaft. The requirements of tolerances and surface conditions (Ra ≤ 3.2 µm) are relatively moderate. We recommend carefully selecting the size using the dimensional chart for applications in which power loss and V'Ring lifespan are important criteria. If the diameter of the shaft Ød1 overlaps two potential V'Ring choices, we recommend selecting the larger V'Ring. The tightness on the shaft will in fact reduce, like the contact pressure of the lip on the back.
|Roughness in Ra||Circumferential speed v||Media|
|0.40 µm - 0.80 µm||> 10.0 m/s||Oil, water|
|0.80 µm - 1.60 µm||5.0 m/s - 10.0 m/s||Oil splashes, grease, water splashes|
|1.60 µm - 2.00 µm||1.0 m/s - 5.0 m/s||Grease, dirt, water splashes|
|2.00 µm - 2.50 µm||< 1.0 m/s||Grease, dirt|
The surface roughness must not have a Ra < 0.05 µm.
FlatnessThe flatness of the counter-face is essential, even more so when rotation speeds are high. The maximum acceptable deviation is 0.40 mm for 100.00 mm.
Axial supportInstalling the V'Ring is recommended when the axial support is at full stop. This is also recommended for applications where tightening between the V'Ring and the shaft is relatively weak and where the circumferential speed will exceed 6.0 - 8.0 m/s.The table below sets out the calculation method for the diameter of the support Ød2.
|V'Ring profiles||Diameter Ød2|
|VA||Ød1 + 0.50 x C|
|120VE||Ød1 + 9.00 mm|
|120VL||Ød1 + 3.00 mm|
|120VS||Ød1 + 0.50 x C|
V ring Seal Sizes
Morgan Seals has the biggest vulcanizing machine(4000T) and different kinds of seal moulds. So for the non-standard v ring seals, please do not hesitate to contact with us. The following is the the picture of our production line and warehouse:
Guangzhou Morgan Seals Co., Ltd the expert in sealing solution field who combines the rich seals research and production experience of her parent firm with the advanced technology and administration of Morgan, Worcester. Morgan Seals Research and Development ability is based on her parent firm who has won awards as scientific research achievements for more than 1000 projects and over 200 of them won scientific and technological progress prizes of municipal, provincial, ministerial and national levels. At the same time, it also has one National Certified Laboratory, one National Engineering Research Centers and three Industry Level Inspection Centers.