Back-up rings
Support rings limiting seal extrusion into the clearance gap. Check the section, pressure direction and whether support is needed on one or both sides.
Family illustration; not an individual profile or manufacturing drawing.
Reference profiles.
Open a profile for construction details and the available manufacturer technical sheet.
SPRSpiral
Construction features
- Spiral
- Rectangular cross section
- Slotted
Technical documentation
Manufacturer technical sheet: section geometry, dimensions and operating information for the referenced profile.
Technical sheet · PDF · EN ↗FST catalogue reference. Dimensions and compound must match the selected item.
SRARectangular cross section
Construction features
- Rectangular cross section
- Slotted
Technical documentation
Manufacturer technical sheet: section geometry, dimensions and operating information for the referenced profile.
Technical sheet · PDF · EN ↗FST catalogue reference. Dimensions and compound must match the selected item.
SRIRectangular cross section
Construction features
- Rectangular cross section
- Slotted
Technical documentation
Manufacturer technical sheet: section geometry, dimensions and operating information for the referenced profile.
Technical sheet · PDF · EN ↗FST catalogue reference. Dimensions and compound must match the selected item.
STRSymmetrical
Construction features
- Symmetrical
- Rectangular cross section
- Slotted
Technical documentation
Manufacturer technical sheet: section geometry, dimensions and operating information for the referenced profile.
Technical sheet · PDF · EN ↗FST catalogue reference. Dimensions and compound must match the selected item.
STUConcave cross section
Construction features
- Concave cross section
Technical documentation
Manufacturer technical sheet: section geometry, dimensions and operating information for the referenced profile.
Technical sheet · PDF · EN ↗FST catalogue reference. Dimensions and compound must match the selected item.
No matching profile. Try a shorter code.
Data for the correct selection.
| Selection parameter | What to specify |
|---|---|
| Dimensions | Shaft/rod or bore diameter d/D; groove diameter; width H; tolerances |
| Material and compound | Compound code, hardness, reinforcements and any required approvals. Check the individual profile document. |
| Medium | Fluid type, concentration, additives and cleaning agents. |
| Service conditions | Minimum/maximum temperature, pressure and peaks; sliding speed or rotation; duty cycle. |
| Installation | Groove drawing, surface finish, clearances, pressure direction and assembly method. |
| Traceability and documents | Specify the required compound, conformity declarations and batch documentation in the enquiry. |
Temperature, pressure and speed limits depend on the exact compound, profile and installation. Do not combine maximum ratings from different conditions or extend one profile’s ratings to the whole family.
Profile identifiers refer to the FST technical catalogue. Supply configuration and documentation are confirmed for the specific enquiry.
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