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.

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DESCRIPTION

The OVC profile is an inverted shaft

seal composed of a single metal

cage with a rubber coating and a

primary sealing lip without spring.

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ADVANTAGES

Very good static sealing

Very good thermal expansion

compensation

Greater roughness is

allowed in the housing

Reduced risk of corrosion

Sealing for high viscosity fluids

Primary sealing lip generating

low levels of friction and heat

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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

INVERTED SHAFT SEALS

OVC

ROTARY SEALS | INVERTED SHAFT SEALS |

OVC