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



EXAMPLE OF CODIFICATION

STANDARD CODIFICATION

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

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

Bore diameter ____ : ØD1 = 50.00 mm

Groove diameter __ : Ød1 + 34.50 mm

Part number______ : 507. 050DBK6

Family

Bore diameter

Friction ring material*

O'Ring materials*

507.

050

DB

K6

Part number -

L1

C

Ød2.2

R2

R1

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INSTALLATION DIMENSIONS

Bore diameter

ØD1 H9

Groove diameter

Groove width

Radial section

O'Ring

cross-section

O'Ring / X'Ring

cross-section

BECA 507

Standard range

BECA 508

Light range

Ød1 h9

L1 0/+0.20

S

Ød2.1

Ød2.2

15.0 - 39.9

40.0 - 79.9

D1 - 11.00

4.20

5.50

3.53

1.78

40.0 - 79.9

80.0 - 132.9

D1 - 15.50

6.30

7.75

3.53

1.78

80.0 - 132.9

133.0 - 252.9

D1 - 21.00

8.10

10.50

6.99

2.62

133.0 - 252.9

---

D1 - 24.50

8.10

12.25

6.99

2.62

253.0 - 462.9

---

D1 - 28.00

9.50

14.00

8.40

3.53

463.0 - 700.0

---

D1 - 35.00

11.50

17.50

10.00

3.53

For special applications > 40 MPa, we recommend using an H8/f8 tolerance (bore/piston) or selecting other, more suitable materials. Please

contact our experts.

HYDRAULIC SEALS | PISTON SEALS |

BECA 507 - 508