Ød2

R1

P

L1

C

10/20°

R2

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INSTALLATION DIMENSIONS

Bore diameter

ØD1 H9

Groove diameter

Groove width

Radial section

O’Ring

cross-section

Number of grooves

BECA 843

Standard range

BECA 841

Heavy-duty range

Ød1 h9

L1 0/+0.20

S

Ød2

8.0 - 39.9

---

D1 - 4.90

2.20

2.45

1.78

1

40.0 - 79.9

14.0 - 39.9

D1 - 7.50

3.20

3.75

2.62

1

80.0 - 132.9

40.0 - 79.9

D1 - 11.00

4.20

5.50

3.53

2

133.0 - 329.9

80.0 - 132.9

D1 - 15.50

6.30

7.75

5.33

2

330.0 - 669.9

133.0 - 329.9

D1 - 21.00

8.10

10.50

6.99

2

670.0 - 999.9

330.0 - 669.9

D1 - 28.00

9.50

14.00

8.40

2

For special applications > 30 MPa, we recommend using an H8/f8 tolerance (bore/groove) or selecting other, more suitable materials. Please

contact our experts.

* 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 = 42.50 mm

Part number______ : 843. 050DBK6

Family

Rod diameter

Friction ring material*

O'Ring material*

843.

050

DB

K6

Part number -

ROTARY SEALS | ROTO SEALS |

BECA 841 - 843

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