This Chesterton system delivers a complete approach to valve sealing especially suited for nuclear and fossil power plants, refineries, and chemical plants.A Chesterton technical service specialist will survey applicable valves and recommend comprehensive product solutions tailored for your specific application conditions. This program addresses valve leakage and emissions based on valve type and common sealing concerns. 

This Chesterton Wedgeseal packing is designed for lower temperature applications. Our unique PTFE filament web overlaid on graphite yarn results in a thermally-stable low friction packing.

A die-formed graphite wedge packing for lower temperature applications.  Chesterton's 5800T compression packing combines the excellent thermal and physical stability of graphite with the low friction properties of PTFE.  This packing set incorporates the unique Chesterton WedgeSeal™ design with an innovate graphite/PTFE hybrid packing material.  Unlike PTFE designs, the sealability of 5800T is unaffected by changes in temperature.

Chesterton 5800 WedgeSeal™ Packing sets are manufactured from high-purity graphite. The die-formed rings are non-absorbent and non-wicking. A corrosion inhibitor is incorporated into the rings to help prevent stem pitting. 

Chesterton 5800E WedgeSeal™ Control Valve Kit is a combination packing set that uses Chesterton's unique wedge-shaped, die-formed sealing set along with our 477-1 braided carbon-end rings. This control valve kit has been proven to seal to extremely low VOC emissions levels. Reduced stem friction ensures that the valve will respond to system changes more rapidly and precisely. The 5800E Valve Kit contains all parts necessary to repack the valve in the field with Chesterton's Live-Loading system. 

Chesterton 5800E WedgeSeal™ is designed for high-temperature fugitive emissions service in friction-sensitive valves. Combining Chesterton's 5800 pure die-formed graphite sealing rings with our 477-1 inter-braided carbon yarn end rings, Chesterton 5800E seals to low VOC* emissions levels (less than 500ppm), while providing minimal friction against the stem.