OIL SEAL OTF
The OTF profile is a radial seal with a metal cage with a reinforced rubber coating, a primary sealing lip with integrated spring, an additional dust lip and inverted sealing. The sealing lip, with integrated spring, is placed on the outside.
CHARACTERISTICS
- Very good static sealing.
- Very good thermal expansion compensation
- Greater roughness is allowed in the shaft.
- Reduced risk of corrosion.
- Sealing for low- and high-viscosity fluids
- Modern primary sealing lip with reduced radial forces.
- Protection against undesirable air contaminants.
- With a reinforced rubber coating to prevent corrosion.
See our gInstallation guide for oil seals to perform a correct installation of the seal.
| ø | ºC | bar | m/s |
|---|---|---|---|
|
15-790 mm |
-40ºC + 200ºC |
≤ 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 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.
EN 
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