Chesterton 9K Backup Ring is created via a machining process which enables ring production of all sizes, made to equipment dimensions. The rings are available in various extrusion-resistant materials and are located on the backside or low-pressure side of the sealing element they are supporting.

Chesterton 20K D-Ring is a compression seal most commonly designed for use in static applications and often applied as an upgrade from conventional face seals or O-ring designs. This design provides excellent performance in applications found in hydraulic or pneumatic equipment, including flanges and valves control units.  

A single-acting piston cup with a positive, flared-lip design to optimize sealing forces. Each seal is individually manufactured and provides excellent performance in for use in hydraulic and pneumatic applications.  The Chesterton 7K compression-molded design is supplied with a supporting metallic brass disc, molded into the base of the seal to improve seal performance. The rigid base provides a stable, non-distorting, anti-extrusion resistant seal. 

Custom manufactured rod- or piston-mounted bi-directional seals made from second-generation PTFE. Each seal is individually manufactured and provides excellent performance in single-groove, double-acting hydraulic applications.  

Chesterton 20K Duoseal is a continuous, bi-directional compression seal with dual independent sealing points. The robust, durable, dual-lip profile was specifically designed for single groove cavities in heavy-duty, high-pressure hydraulic applications.

This V-ring set for hydraulic applications provides an economical means of sealing older worn equipment. It is particularly adaptable to deep stuffing boxes and odd-sized rams where equipment cannot be disassembled.