Chesterton 5900 Graphite Valve Bonnet Seal

This high-pressure graphite bonnet seal is  applicable for use on valves with screwed and bolted bonnets in steam and water. The Chesterton 5900 offers improved reliability and leak tightness of pressure seal bonnet joints. Available with metal end caps.

Product Features
Conforms easily to the valve’s body and bonnet
Maintains excellent anti-extrusion properties
Requires significantly lower pressure to seal than traditional metal bonnet seals
Can handle minor scores and pitting to sealing surface, thus reducing maintenance costs
Enables easy removal without damage to the valve body
Application