The GARTHANE® 9220 U-Seal is a tough urethane seal with excellent tear and abrasion resistance.

Garlock GARTHANE® 9220 U-Seals have four times the tensile strength and tear resistance of conventional seals and can withstand shocks over a wide range of temperatures, chemicals, and pressures. They also demonstrate outstanding endurance under difficult operating conditions. These seals are ideal for plungers, pistons, rams, and rods.


  • Increased seal life and performances
  • Eliminates chance of costly premature equipment failure
  • 90 Durometer Urethane – High tensile strength and tear resistance
  • Reverse bevel lip design – Less friction and responds immediately to pressure
  • Balanced Design – Can function as a rod or piston seal
  • Extensive tooling list – Greater size availability-both inch and metric
  • Four times the tensile strength/tear resistance of conventional seals
  • High modulus counteracts extrusion and shear forces
  • Withstands shocks over a wide range of temperatures and pressures
  • Exceptional abrasion resistance
  • Outstanding endurance under difficult operating conditions
  • Excellent elasticity and resilience
  • Withstands high degree of deformation
  • Excellent for use against petroleum based fluids to 225°F / 107°C; air, warm water, and water glycol to 180°F / 82°C


  • Max. Temperature:     180°F   /     82°C
  • Max. Pressure:        3500 psi   /     242 bar
  • Min Shaft:            0.188 in.   /     4.78 mm
  • Max Shaft:            36 in.      /      91.44 cm


  • Plungers
  • Pistons
  • Rams
  • Rods


  • Compounded to withstand a wide range of pressure conditions
  • Normally used as hydraulic cylinder or large ram press seals to 3,500 psi / 242 bar
  • Successfully used for slow-moving equipment to 8,000 psi / 552 bar, and static applications to 30,000 psi / 2,070 bar on specially adapted equipment
  • Withstands dilute acidic and alkaline solutions, aliphatic alcohols and hydrocarbons, salts, and solutions of aromatics and solids in concentrations under 80%

Not recommended for use with very strong oxidizers, highly concentrated acids or bases, pure aromatic compounds, esters, ketones, automotive brake fluid, or steam.

Recommended tolerances and finishes:

  • Shaft hardness: 30 Rockwell C (minimum)
  • Groove length (axial): Height of U-seal plus 10% of cross section (0.032 minimum)
  • Dynamic surface finish: 10 to 20 RMS Tolerance: ±0.003 (maximum)
  • Static surface finish: 60 RMS (maximum) Tolerance: ±0.005 (maximum)
Find SDS and MSDS Documents


Related Files