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
|Pressure [bar]||Temperature Range [°C]||Sliding Speed [m/s]|
|Standard||500||-30 … +100||–|
|Design Hints Surface Finish|
|Ra [µm]||Rt [µm]|
|Sealing Surface / Groove Base||0.8||≤ 6.3|
|Groove Sides||3.2||≤ 15|