Back-up ring SPR
![Design Sketch](https://products.fst.com/medialibrary/assets/designsketch_spr_0ad8e72a9f.png)
Description
- Spiral
- Rectangular cross section
- Slotted
- Advantages
- Downloads
- Applications
- Function
- High pressure creep resistance
- High extrusion reliability
- Long service life
Most commonly used in the following applications:
Static sealing of bushes
Static sealing of covers
Switch valves
Vacuum applications
Vacuum pumps
- Extension of the application range of o-rings
- Prevents gap extrusion with radial sealing O-rings