OBVD O-RING
The OBVD ax/2ax reliably prevents the O-Rings from entering into the gap (gap extrusion) by means of their highly extrusion-resistant back rings.
The OBVD 2ax version is suitable for pressurization on both sides, e. g. as a static seal between piston and rod.
The NBR O-Ring, which is firmly fixed to the PUR back ring, compensates for design clearances and
tube breathing.
| Materials | |||
| O-Ring | Back Ring | ||
| Standard | NBR | PUR | |
| Alternative | FKM | PTFE | |
| Application Range | |||
| Pressure [bar] | Temperature Range [°C] | Sliding Speed [m/s] | |
| Standard | 500 | -30 … +100 | – |
| Design Hints Surface Finish | |||
| Surface Quality | |||
| Ra [µm] | Rt [µm] | ||
| Sealing Surface / Groove Base | 0.8 | ≤ 6.3 | |
| Groove Sides | 3.2 | ≤ 15 | |
