GRAFOIL® flexible graphite sealing solutions, materials, and processes are covered by one or more of the following US patents: 5,443,894; 5,451,064; 5,494,506; 5,830,809; 5,885,728; 5,902,762; 5,981,072; 5,985,452; 5,990,027; 6,017,633; 6,087,034; 6,143,218; 6,669,919. Other US and foreign patents granted or pending.