Characteristics:
  Single spring seal
  Conical spring
  Single Direction
  Unbalanced
Operating limits
  D1=10-40mm
  Pressure p=10bar
  Speed v=20m/sec
  Temperature t=-20+180oc
Material:
  Rotary faces :ceramic SiC .TC
  Sationary face :carbon .SiC.TC
  Rubber :NBR.EPDM.VITON
  Spring :SS304
  Metal partS :SS304