Oil Seal DC4
The DC4 profile is a special seal, for motorcycle and bicycle shock absorbers, composed of a single rubber-coated metal cage and a double sealing lip suitable for linear movements, with the fluids separated by the integrated springs.
CHARACTERISTICS
- Very good static sealing.
- Very good thermal expansion compensation
- Greater roughness is allowed in the casing.
- Reduced risk of corrosion.
- Sealing for low- and high-viscosity fluids
- Modern sealing lips with low radial forces.
- Sealing lips designed for linear movements.
- Fluid separation system.
See our gInstallation guide for oil seals to perform a correct installation of the seal.
| ø | ºC | bar | m/s |
|---|---|---|---|
|
15-100 mm |
-30ºC / 100ºC |
≤ 6.5 bar |
≤ 1,5 m/s |
MATERIALS
Elastomer
NBR 80-90 Shore A
HNBR 80-90 Shore A
XNBR 80-90 Shore A
Metal casing
AISI 1060-90 - AISI 304 - AISI 316
Spring
AISI 1060-90 - AISI 302 - AISI 304 - AISI 316
TOLERANCES FOR THE OUTSIDE DIAMETER OF THE OIL SEAL
| Housing diameter | Metal cage | Elastomeric coating | Housing with grooves |
|---|---|---|---|
| ≤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
The inner diameter of the sealing lip is always smaller than the shaft diameter. Depending on the shaft size, the sealing lip diameter is generally between 0.8 and 3.5 mm smaller than the shaft diameter.
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