Parker Fluid Connector Group
721ST Series 4000 PSI Constant Working Pressure Hose

Key Features

  • One-half SAE 100R12 minimum bend radius means you use less hose
  • Specially engineered Tough Cover compound resists abrasion in aggressive environments
  • Up to 4000 psi working pressure
  • Unique three-color layline makes hose easy to identify

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Parker's 721ST hose provides 450x the abrasion resistance compared to standard rubber covered hose. With 4000psi constant working pressure and ½ SAE 100R12 minimum bend, this hose delivers performance in critical applications where space is tight.

Applications 

  • Transportation
  • Military
  • Construction
  • Agriculture
  • Grounds & Building Maintenance
  • Forestry
  • Utility Equipment
  • Waste & Refuse

MediaPetroleum base hydraulic fluids and lubricating oils
Hose I.D. Minimum(inch)1/4
Hose I.D. Minimum(mm)12,5
Maximum Working Pressure (psi)2500 - 4000
Hose I.D. Maximum(inch)1-1/4
Hose I.D. Maximum(mm)31,5
Maximum Working Pressure (Mpa)17,5 - 28
Material - Hose Inner TubeSynthetic rubber
Material - Hose reinforcementFour spiral steel wire
Material - CoverSynthetic rubber super abrasion resistant, MSHA accepted
Minimum Bend Radius (inch)1/2 minimum SAE bend radius
Minimum Bend Radius (mm)1/2 minimum SAE bend radius
Working Temperature (F) Oil Minimum-40
Working Temperature (F) Oil Maximum+257
Working Temperature (C) Oil Minimum-40
Working Temperature (C) Oil Maximum+125
Meets Industry StandardsSAE 100R12 / ISO 3862-1 TYPE R12 / EN 856 TYPE R12
Compatible Fittings71 series