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 - 18,9 | ø d - 4,9 | 2,2 | 1,78 | ||
| 8 - 18,9 | 19 - 37,9 | ø d - 7,3 | 3,2 | 2,62 | |
| 19 - 37,9 | 38 - 199,9 | 8 - 18,9 | ø d - 10,7 | 4,2 | 3,53 |
| 38 - 199,9 | 200 - 255,9 | 19 - 37,9 | ø d - 15,1 | 6,3 | 5,33 |
| 200 - 255,9 | 256 - 649,9 | 38 - 199,9 | ø d - 20,5 | 8,1 | 6,99 |
| 256 - 649,9 | 650 - 999,9 | 200 - 255,9 | ø d - 24,0 | 8,1 | 7,00 |
| 650 - 999,9 | 256 - 649,9 | ø d - 27,3 | 9,5 | 8,40 |
Gap dimension "s" / radius "R"
| Groove width E+0,2 | Gap "s" 0 - 20 MPa | Gap "s" 20 - 40 MPa | Radius R |
| 2,2 | 0,3 - 0,2 | 0,2 - 0,1 | 0,4 |
| 3,2 | 0,3 - 0,2 | 0,2 - 0,1 | 0,6 |
| 4,2 | 0,4 - 0,3 | 0,3 - 0,1 | 1,0 |
| 6,3 | 0,4 - 0,3 | 0,3 - 0,2 | 1,3 |
| 8,1 | 0,5 - 0,3 | 0,3 - 0,2 | 1,8 |
| 8,1 | 0,5 - 0,3 | 0,4 - 0,2 | 1,8 |
| 9,5 | 0,6 - 0,4 | 0,4 - 0,3 | 2,5 |
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 (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.
News
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