Retén VF
El perfil VF es un retén sin muelle compuesto de una única jaula de metal con un revestimiento de goma reforzado, para evitar la corrosión, y un labio primario obturador sin muelle.
CHARACTERISTICS
- Good static sealing.
- Compensation of different thermal expansion.
- A higher surface roughness of the bore is allowed.
- Sellado para fluidos de alta viscosidad.
- Labio de sellado primario que genera bajos niveles de fricción y calor.
- With a reinforced rubber coating to prevent corrosion.
See our gnstallation guide for oil seals para realizar una correcta instalación del retén VF.
TOLERANCE FOR THE INNER DIAMETER OF THE SEAL
| ø | ºC | bar | m/s |
|---|---|---|---|
|
10-790 mm |
-55ºC/225ºC |
≤0.3 bar |
≤10 m/s |
MATERIALS
Elastomer
NBR 70-75 Shore A
FKM 75-80 Shore A
VMQ 70-75 Shore A
ACM 70-75 Shore A
EPDM 70-75 Shore A
HNBR 70-75 Shore A
Metal Box
AISI 1060-90 - AISI 304 - AISI 316
TOLERANCES FOR THE OUTSIDE DIAMETER OF THE OIL SEAL
| Housing diameter | Metal cage | Elastomeric coating | Lace |
|---|---|---|---|
| ≤ 50.0 | +0.10 / +0.20 | +0.15 / +0.30 | +0.20 / +0.40 |
| >50.0 ≤80.0 | +0.13 / +0.23 | +0.20 / +0.35 | +0.25 / +0.45 |
| >80.0 ≤120.0 | +0.15 / +0.25 | +0.20 / +0.35 | +0.25 / +0.45 |
| >120.0 ≤180.0 | +0.18 / +0.28 | +0.25 / +0.45 | +0.30 / +0.55 |
| >180.0 ≤300.0 | +0.20 / +0.30 | +0.25 / +0.45 | +0.30 / +0.55 |
| >300.0 ≤500.0 | +0.23 / +0.35 | +0.30 / +0.55 | +0.35 / +0.65 |
| >500.0 ≤630.0 | +0.23 / +0.35 | +0.35 / +0.65 | +0.40 / +0.75 |
TOLERANCE FOR THE INNER DIAMETER OF THE SEAL
When not under pressure, the inside diameter of the sealing lip is always smaller than the shaft diameter. The difference between the two dimensions is known as interference or pre-fitting. Depending on the shaft size, the sealing lip diameter is estimated to be between 0.8 mm and 3.5 mm smaller. It will depend on the setting chosen by each manufacturer.
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