Page 176 - GarlockFluidSealing2010

E-12
9220 GARTHANE® U-Seals
Strength/Durability
¦ Four times the tensile strength / tear resistance of
conventional seals
¦High modulus counteracts extrusion and shear
forces
¦Withstands shocks over a wide range of tempera-
tures and pressures
¦Exceptional abrasion resistance
¦Outstanding endurance under diffcult operating
conditions
Flexibility
¦Excellent elasticity
¦Excellent resilience
¦Withstands high degree of deformation
Temperature and Chemical Resistance
¦Excellent for use against petroleum-based fuids to
225°F (107°C), air, warm water and water glycol to
180°F (82°C)
¦Withstands dilute acetic 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 fuid or steam
Pressure Resistance
¦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
Benefts
¦ Increased seal life and performances
¦ Less equipment downtime
¦ Fewer sizes save inventory expense
¦ Eliminates chance of costly premature equipment
failure
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 fnish: 10 to 20 RMS
Tolerance: ±0.003 (maximum)
¦ Static surface fnish: 60 RMS (maximum)
Tolerance: ±0.005 (maximum)
Features Advantages
90 Durometer ¦High tensile strength
Urethane ¦High tear resistance
Reverse bevel ¦Less friction
lip design ¦Responds immediately to
pressure
Balanced ¦Can function as a rod or
design piston seal
Clear Urethane ¦ No hidden defects in seal
Extensive ¦ Greater size availability —
tooling list both inch and metric
Metric Design
Cross Section
Standard Design
Cross Section
WARNING:
Properties/applications shown throughout this brochure are typical. Your specifc applica-
tion should not be undertaken without independent study and evaluation for suitability.
For specifc application recommendations consult Garlock. Failure to select the proper
sealing products could result in property damage and/or serious personal injury.
Performance data published in this brochure has been developed from feld testing,
customer feld reports and/or in-house testing. While the utmost care has been used in
compiling this brochure, we assume no responsibility for errors.
Specifcations subject to change without notice. This edition cancels all previous issues.
Subject to change without notice.