NA 745

Multi-yarn packing made from pure aramid fibres with corners of pure PTFE fibres at the running surface

  • The PTFE fibres yarns at the base provide excellent chemical resistance, low co-efficient of friction and virtually eliminate shaft scoring
  • The tough PTFE impregnated aramid fibre yarns at the corners provides superb extrusion, abrasion and pressure resistance, allowing the packing to be used at very high pressure conditions
  • Clean and non-toxic, can be used over a wide range of media including critical services that demand an extrusion resistant or reinforced packing

Ideal in prepressed ring form

Service Media and Conditions Carbonate solution, ammonia compounds, chemicals, abrasives, slurries, sewage, water, oils, solvents, diluted acids and alkali etc
Temperature -100°C to 280°C
Pressure 250 bar (static), 30 bar (rotary), 150 bar (reciprocating)
Shaft Speed 10 m/sec (rotary)
pH 2 to 13
Applications Plunger pumps—NA 745 centrifugal shafts, mixers, agitators—NA 745L