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L1

C

R2

R1

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INSTALLATION DIMENSIONS

Bore diameter

ØD1 H9

Groove diameter

Groove width

Radial section

O’Ring

cross-section

BECA 550

Standard range

BECA 559

Extended range

Ød1 h9

L1 0/+0.20

S

Ød2

5.0 - 13.9

5.0 - 139.9

D1 - 2.90

2.40

1.45

1.78

14.0 - 24.9

8.0 - 259.9

D1 - 4.50

3.60

2.25

2.62

25.0 - 45.9

12.0 - 469.9

D1 - 6.20

4.80

3.10

3.53

46.0 - 124.9

20.0 - 669.9

D1 - 9.40

7.10

4.70

5.33

125.0 - 669.9

80.0 - 999.9

D1 - 12.20

9.50

6.10

6.99

670.0 - 999.9

125.0 - 999.9

D1 - 15.00

10.00

7.50

8.40

* The codes that define the materials are set out in the materials table on the previous page.

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EXAMPLE OF CODIFICATION

STANDARD CODIFICATION

Materials ________ : Friction ring, PTFE + 60% Bronze - Code DB

________________ : NBR 70 Shore A O'Ring - Code K6

Bore diameter ____ : ØD1 = 50.00 mm

Groove diameter __ : Ød1 + 40.60 mm

Part number______ : 550. 050DBK6

Family

Bore diameter

Friction ring material*

O'Ring material*

550.

050

DB

K6

Part number -

HYDRAULIC SEALS | PISTON SEALS |

BECA 550 - 559