Gasket materials complies in all respects with physical requirements specified in "ANSI/AWWA C111/A 21.11.00/UL-194/NSF-61" Superior quality synthetic rubber materials like SBR / EPDM. Application : Cast Iron or Ductile Iron Pipe Joint Sealing High Pressure Gasket Restrained Joint Gasket 100% leak proof seal Pipe can accomodate ground movement due to flexible design of the joint Gasket prevents Thrust Force Movement Intermittent jerk of water during use is absorbed by the gas