HUNGER® Composite O-Ring Back-up Ring Seals (OBVD)
Seal Supply also supplies O-ring backup ring composite (OBVD) seals from Hunger, a German brand. 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. The OBVD ax is suitable for any standard groove sizes, e.g. in accordance to DIN 3771.
We look forward to receiving your request at sales@sealsupply.nl.