AFLAS® > Products >Basic Properties of AFLAS®

Features of AFLAS® Basic Properties of AFLAS® Chemical Resistance of AFLAS® Cost Advantage of AFLAS® AFLAS® 100/150 Series Standard Grade AFLAS® 200 Series Balances low-temperature properties and chemical resistance

Oil Resistance of AFLAS® An example of Engine Oil Component Automotive Oils AFLAS® is resistant to highly reactive organic and inorganic chemicals. AFLAS® is highly resistant to automotive oils heavily formulated with amine additives. AFLAS® is suitable even in dirty environments, such as gear seals, where PTFE resin seals are not suitable. Application for Automotive Fluids : AFLAS® vs. FKM Oil Component Application Temperature () AFLAS® FKM Engine Oil   Crank Shaft Seal 160 Valve Stem Seal - - - AT Fluids   Transmission Seal 160 Gear Oil   Pinion Seal 135 Axle Seal - - - Differential Gear Seal - - - Brake Fluids Polyglycolether   135 Coolants Glycol-H2O Cylinder Liner Seal 135 Water Pump Seal - - - Cylinder Head Gasket - - - Operating Oils Glycol-H2O Shock Absorber Seal 110 Phosphate   - Silicone Oil   - Fuels Gasoline   110 Light Oil   - Heavy Oil   - 100% Methanol   - : Suitable, : Applicable, : Caution, : Not applicable Oil Resistance Engine Oil ( SM, Immersed at 175 ) Retention of Tensile Strength Retention of Tensile Elongation CNG Automotive Engine Oil ( Immersed at 175 ) Retention of Tensile Strength Retention of Tensile Elongation Electrical Properties of AFLAS® AFLAS® offers excellent electrical properties in comparison to all other vinylidenfluoride type fluororubbers. Electrical Properties   Volume Resistivity (·cm) Dielectric Constant (1kHz) Dielectric Loss (1kHz) Dielectric Breakdown (kV/mm) AFLAS® (100,150,300S) 3x1016 2.8 0.03 23 AFLAS® (200P) 4x1015 5.9 0.03 16 FKM 2x1013 17 0.03 20 EPDM 5x1016 2 0.0015 40 Silicone Rubber 5x1015 3-4 0.007 25 IIR 1x1015 3 0.005 30 SBR 1x1015 2-3 0.006 25 Chloroprene Rubber 2x1013 7 0.04 15 Pure rubber compound at R.T. Electrical Resistivity vs. Temperature Volume Resistivity vs. Temperature (pure rubber compound) Dielectric Breakdown vs. Temperature (pure rubber compound) Fundamental Properties of the AFLAS® Vulcanizate by Electron Beam* Grade 100S 150E 150C 150CS Specific gravity 1.55 1.55 1.55 1.55 Hardness (JIS A) 50 39 52 51 100% Modulus, MPa 1.5 1.1 1.5 1.4 Tensile strength, MPa 18 9 19 17 Elongation at break, % 330 460 400 360 Volume resistivity at 23,·cm >1016 >1016 >1016 >1016 Dielectric constant at 1kHz, 23 2.8 2.8 2.8 2.8 Dielectric breakdown at 23, kV/mm 25 23 24 23 *Cured by 100 kGy of electron beam irradiation alone, without any additional ingredients.

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