RI innendichtendRI internal sealing actionRI innendichtendRI innendichtend
S.F. Components GmbH

Rotary seal of PTFE - RA internal sealing


   Diameter shaft  ø d f8/h9

Diameter shaft
ø D f8/h9
Groove root
ø D H9
Groove width
Cord thickness ø D1
number of
5 - 18,9ø D - 4,92,2ø 1,780
19 - 37,9

ø D - 7,5

3,2ø 2,620
38 - 199,9ø D - 11,04,2ø 3,531
200 - 255,9ø D - 15,56,3ø 5,332
256 - 649,9ø D - 21,08,1ø 7,002
650 - 999,9ø D - 28,09,5ø 8,502

Gap dimension "s" / radius "R"

Groove width
Gap "s"
10 MPa
Gap "s"
20 MPa
2,20,150,100,3 - 0,5
3,20,200,200,5 - 0,7
4,20,250,200,8 - 1,0
6,30,300,251,2 - 1,5
8,10,300,251,5 - 2,0
9,50,400,302,0 - 2,8

All rotary 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!

Rotary seals / Ordering example:


RI - 80 x 95,1 x 6,3 - K
Rotary seal internal for shaft diameter of ø 80 / PTFE-Carbon / Standard design

RI - 80 x 91,0 x 4,2 - GF

Rotary seal internal for shaft diameter of ø 80 / PTFE-glass fibre / Special dimension and material

PTFE - Carbon
PTFE - Bronze
PTFE - Glass fibre
PTFE - Special material




In standard design the rotary seals will be supplied in material PTFE-Carbon, special groove dimension (up to 10 MPa are recommended) see in the above-mentioned table.


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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Rotary sealing

Technical information



external sealing action


internal sealing action


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