Anti-extrusion or backup rings

Chesterton® 9K anti-extrusion rings are designed to prevent seals or o-rings from extruding into equipment clearances while under pressure. Each ring is individually manufactured and provides excellent performance, as a supporting element, to both piston and rod seals that are generally found in static or dynamic hydraulic applications. These anti-extrusion rings are available in various extrusion resistant materials and are located on the back-side or low pressure side of the sealing element they are supporting.

• Prevent extrusion of sealing element into equipment clearances, improve MTBR
• Static and dynamic applications, plant-wide usage
• Available in various profiles and materials