Chesterton’s 5900 Graphite High Pressure Bonnet Seals offer the end user in the power industry a solution for improved reliability and leak tightness of pressure seal bonnet joints.

The Graphite High Pressure Bonnet Seals can be used on valves with screwed and bolted bonnets in steam and water.

• Conforms easily to the valve body and bonnet
• Maintains excellent anti-extrusion properties
• Requires significantly lower pressure to seal