SD doppeltwirkendSD double actingSD doppeltwirkendSD doppeltwirkend
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PTFE - rod seals - SD

Selection

Diameter d f8/h9

Standard
design
Light-duty
design
Heavy-duty
design
Groove root
ø
D H9
Groove width
E+0,2
O-Ring
Cord thickness
8 - 18,9ø d - 4,92,21,78
8 - 18,919 - 37,9ø d - 7,33,22,62
19 - 37,938 - 199,98 - 18,9ø d - 10,74,23,53
38 - 199,9200 - 255,919 - 37,9ø d - 15,16,35,33
200 - 255,9256 - 649,938 - 199,9ø d - 20,58,16,99
256 - 649,9650 - 999,9200 - 255,9ø d - 24,08,17,00
650 - 999,9256 - 649,9ø d - 27,39,5

8,40

Gap dimension "s" / radius "R"

Groove width
E+0,2
Gap "s"
0 - 20 MPa
Gap "s"
20 - 40 MPa
Radius
R
2,20,3 - 0,20,2 - 0,10,4
3,20,3 - 0,20,2 - 0,10,6
4,20,4 - 0,30,3 - 0,11,0
6,30,4 - 0,30,3 - 0,21,3
8,10,5 - 0,30,3 - 0,21,8
8,10,5 - 0,30,4 - 0,21,8
9,50,6 - 0,40,4 - 0,32,5

All rod seals are supplied as standard with an O-ring of NBR, 70 Shore. O-rings of special materials such as Viton must be separately specified!

Rod seals / Ordering example:

Material

SD - 40 x 50,7 x 4,2 - BR
Rod seal for rod diameter of ø 40 / PTFE-Bronze / Standard design

SD - 40 x 55,1 x 6,3 - K

Rod seal for rod diameter of ø 40 / PTFE-Carbon / Heavy-duty design

PTFE - Bronze
PTFE - Carbon
PTFE - Glass fibre

PU - Polyurethan

(Special material; note modified material properties and technical specifications)

BR

C

GF

PU

Directives

All information and values stated concerning our product portfolio are based on the knowledge optained through a long experience of manufacturing and application.
These figures are for indicative purposes only and may vary (exceed or deceed) according to the particular circumstances. Unknown factors in the applications and practice can considerably change the conditions and reduce and change statements, which may cause the above information to be invalid.
No liability can be accepted for any mistakes or omissions, error and subject to change without prior notice.

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Rod seals

Technical information

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SE single acting

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SD double acting

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