QUALITY & EXPERTISE FOR YOUR SEALING NEEDS

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SEAL DESIGN

Tolerance for the inside diameter of the seal (Ød)

Shaft diameter

Ød1 (mm)

Apparent metal cage

Rubber coating

Coating with grooves

Ød1 ≤ 50.0

-0.20 / -0.10

-0.30 / -0.15

-0.40 / -0.20

50.0 < Ød1 ≤ 80.0

-0.23 / -0.13

-0.35 / -0.20

-0.45 / -0.25

80.0 < Ød1 ≤ 120.0

-0.25 / -0.15

-0.35 / -0.20

-0.45 / -0.25

120.0 < Ød1 ≤ 180.0

-0.28 / -0.18

-0.45 / -0.25

-0.55 / -0.30

180.0 < Ød1 ≤ 300.0

-0.30 / -0.20

-0.45 / -0.25

-0.55 / -0.30

300.0 < Ød1 ≤ 500.0

-0.35 / -0.23

-0.55 / -0.30

-0.65 / -0.35

Roundness tolerance

Shaft diameter

Ød1 (mm)

Apparent metal cage

Rubber coating

Ød1 ≤ 50.0

0.18

0.25

50.0 < Ød1 ≤ 80.0

0.25

0.35

80.0 < Ød1 ≤ 120.0

0.30

0.50

120.0 < Ød1 ≤ 180.0

0.40

0.65

180.0 < Ød1 ≤ 300.0

0.25% of the inside diameter

0.80

300.0 < Ød1 ≤ 500.0

0.25% of the inside diameter

1.00

Tolerance for the outside diameter of the seal (ØD)

Free and without constraint, the outside diameter of the sealing lip is always bigger than

the diameter of the rotating hub. The pre-tightening or interference denotes the difference

between these two values. Depending on the hub diameter, the diameter of the sealing lip is

generally considered to be greater, between 0.8 and 3.5 mm.

Pumping leads

Clockwise

Anti-clockwise

Bi-directional

R

L

H0

Other types of pumping leads can be created according to your specifications. Please

contact our experts.

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DESCRIPTION

The OSB2 profile is an inverted

shaft seal composed of a single

internal metal cage and a primary

sealing lip with integrated spring.

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ADVANTAGES

Good radial rigidity, particularly

for large diameters

Good stability when assembled,

preventing the bounce-back effect

Sealing for low and high viscosity fluids

Modern primary sealing lip

with low radial forces

Suitable for rotating hubs

with a fixed shaft

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APPLICATIONS

All types of rotative applications

Rotating hubs

Fixed shafts

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MATERIALS

Rubber

ACM 70 - 75 Shore A

EPDM 70 - 75 Shore A

FKM 70 - 75 Shore A

HNBR 70 - 75 Shore A

NBR 70 - 75 Shore A

Metal cage

Steel - AISI 1010

Stainless steel - AISI 304

Stainless steel - AISI 316

Spring

Steel - AISI 1070 - 1090

Stainless steel - AISI 316

INVERTED SHAFT SEALS

OSB2

ROTARY SEALS | INVERTED SHAFT SEALS |

OSB2