QUALITY & EXPERTISE FOR YOUR SEALING NEEDS

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EXTRUSION GAPS

Diameter

of the rod

Ød1

Radial gap

F/2

≤ 5 MPa

≤ 10 MPa

≤ 20 MPa

≤ 30 MPa

≤ 40 MPa

≤ 60 mm

0.40

0.30

0.20

0.15

0.10

> 60 mm

0.50

0.40

0.30

0.20

0.15

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SURFACE ROUGHNESS

Roughness

Dynamic surface area

Static surface area

Groove flanks

Ra

0.1 - 0.4 µm

≤1.6 µm

≤3.2 µm

Rz

0.63 - 2.5 µm

≤6.3 µm

≤10.0 µm

Rmax

1.0 - 4.0 µm

≤10.0 µm

≤16.0 µm

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CHAMFERS AND RADIUS

Radial section

S

Radius

R1

Radius

R2

Chamfer

C

3.50

0.20

0.40

2.00

4.00

0.20

0.60

2.50

5.00

0.20

1.00

2.50

7.50

0.20

1.00

4.00

12.50

0.20

1.30

6.00

20.00

0.20

1.80

8.00

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DESCRIPTION

The BECA 231 profile is a U-ring

type single acting rod seal with

offset polyurethane lips. It can be

assembled in a groove according

to standard ISO 5597.

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ADVANTAGES

Optimised sealing effect at both

high and low pressures

Excellent abrasion and

extrusion resistance

Assembly by deformation

in closed groove

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APPLICATIONS

Mobile hydraulics

Injection presses

Machine tools

Presses

Hydraulic cylinders

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MATERIALS

PU 93 Shore A - Blue

PU 96 Shore A - Blue

High temp. PU 96 Shore A - Beige

Other grades of materials are available.

Please contact our experts.

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TECHNICAL DATA

Temperature

-30°C / +110°C

Pressure

40 MPa

Speed

0.5 m/sec

Media

Mineral hydraulic oils

The figures above indicate the maximum values and may not be cumulated. They may be

developed, depending on the materials used.

ROD SEALS

BECA 231

HYDRAULIC SEALS | ROD SEALS |

BECA 231