RA außendichtendRA external sealing actionRA außendichtendRA außendichtend
S.F. Components GmbH

Rotary seal of PTFE - RA external sealing

Selection

    Diameter DH9

Diameter
ø D H9
Groove root
ø d h9
Groove width
E+0,2
O-Ring
Cord thickness ø D1
number of
grooves
8 - 39,9ø D - 4,92,2ø 1,780
40 - 79,9

ø D - 7,5

3,2ø 2,620
80 - 132,9ø D - 11,04,2ø 3,531
133 - 329,9ø D - 15,56,3ø 5,332
330 - 669,9ø D - 21,08,1ø 7,002
670 - 999,9ø D - 28,09,5ø 8,502

Gap dimension "s" / radius "R"

Groove width
E+0,2
Gap "s"
10 MPa
Gap "s"
20 MPa
Radius
R
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:

Material

RA - 80 x 69,0 x 4,2 - K
Rotary seal external for outside diameter of ø 80 / PTFE-Carbon / Standard design

RA - 80 x 64,5 x 6,3 - BR

Rotary seal external for outside diameter of ø 80 / PTFE-Bronze / Special dimension and material

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

C

BR

GF
SO

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.

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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Rotary sealing

Technical information

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external sealing action

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internal sealing action

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