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SEAL DESIGN

Tolerance for the outside diameter of the seal (ØD)

Bore diameter

ØD1 (mm)

Apparent metal cage

Rubber coating

Coating with grooves

ØD1 ≤ 50.0

+0.10 / +0.20

+0.15 / +0.30

+0.20 / +0.40

50.0 < ØD1 ≤ 80.0

+0.13 / +0.23

+0.20 / +0.35

+0.25 / +0.45

80.0 < ØD1 ≤ 120.0

+0.15 / +0.25

+0.20 / +0.35

+0.25 / +0.45

120.0 < ØD1 ≤ 180.0

+0.18 / +0.28

+0.25 / +0.45

+0.30 / +0.55

180.0 < ØD1 ≤ 300.0

+0.20 / +0.30

+0.25 / +0.45

+0.30 / +0.55

300.0 < ØD1 ≤ 500.0

+0.23 / +0.35

+0.30 / +0.55

+0.35 / +0.65

500.0 < ØD1 ≤ 630.0

+0.23 / +0.35

+0.35 / +0.65

+0.40 / +0.75

Roundness tolerance

Bore 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 outside diameter

0.80

300.0 < ØD1 ≤ 500.0

0.25% of the outside diameter

1.00

500.0 < ØD1 ≤ 630.0

-

-

Tolerance for the inside diameter of the seal (Ød)

Free and without constraint, the inside diameter of the sealing lip is always smaller than the

diameter of the shaft. The pre-tightening or interference denotes the difference between

these two values. Depending on the shaft diameter, the diameter of the sealing lip is generally

considered to be less, 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 DB2 profile is a shaft seal composed

of a single external metal cage and

a double primary sealing lip with

integrated springs to separate fluids.

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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 sealing lips with low radial forces

Fluid separation system

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APPLICATIONS

All types of rotative applications

Machine tools

Agriculture

Construction

Transmission

Gear boxes

Motors

Pumps

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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

STANDARD SHAFT SEALS

DB2

QUALITY & EXPERTISE FOR YOUR SEALING NEEDS

ROTARY SEALS | STANDARD SHAFT SEALS |

DB2