QUALITY & EXPERTISE FOR YOUR SEALING NEEDS



DESCRIPTION

The BECA 335 profile is a U-ring

type single acting symmetrical

seal with matching polyurethane

lips. It can be used for both rod

and piston applications.



ADVANTAGES

Optimised sealing effect

Excellent abrasion resistance

Very good wear resistance



APPLICATIONS

Agriculture

Mobile machinery

Lifting systems

Injection presses

Hydraulic cylinders



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.

|



TECHNICAL DATA

Temperature

-30°C / +110°C

Pressure

30 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.

|



EXTRUSION GAPS

Bore diameter ØD1

Rod diameter Ød1

Radial gap

F/2

≤ 5 MPa

≤ 10 MPa

≤ 20 MPa

≤ 30 MPa

≤ 60 mm

0.40

0.30

0.20

0.15

> 60 mm

0.50

0.40

0.30

0.20

|



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

|



CHAMFERS AND RADIUS

Radial section

S

Radius

R1

Radius

R2

Chamfer

C

3.00

0.20

0.40

2.00

4.00

0.20

0.40

2.50

5.00

0.40

0.60

3.00

7.50

0.80

1.00

4.00

10.00

0.80

1.00

5.00

PISTON/ROD SEALS

BECA 335

HYDRAULIC SEALS | PISTON/ROD SEALS |

BECA 335