AFLAS

AFLAS®

AFLAS® is unique fluoroelastomer and has superior base resistance
and electrical insulation than conventional fluoroelastomer.
AFLAS® will meet the applications where higher reliability is required.



Features of AFLAS®

Comparison: AFLAS® vs. FKM

AFLAS® has much better base resistance and steam resistance than FKM.

Comparison: AFLAS® vs. FFKM

AFLAS® has similar chemical resistance to FFKM and is a more cost effective material.



Commercial Polymer Types and Grades

Commercial polymers are classified into two types; one is the TFE-P dipolymer type (AFLAS® 100/150 Series), and the other is the TFE-P-VdF terpolymer type (AFLAS® 200 Series).
AFLAS® 200 Series is characterized by the improved low-temperature properties, demoldability and metal bonding while maintaining most of the high heat and chemical resistance and electrical resistivity of the dipolymer.
Below the current polymer grades are listed, which are mainly classified according to Mooney viscosity. Dipolymer is mostly used in the wire and cable, and automotive industries, while terpolymer is often favored for automotive use in terms of processability.

Polymer Structure TFE-P TFE-P-VdF TFE-P-CSM
Grade 100H 100S 150P 150E 150L 150C 150CS 200P 300S
Specific Gravity 1.55 1.55 1.55 1.55 1.55 1.55 1.55 1.60 1.55
Fluorine Content (%) 57 57 57 57 57 57 57 60 57
Storage Modulus, G'(RPA 100℃, 50cpm) 500 340 240 160 80 490 390 220 380
Mooney Viscosity(ML1+10, 100℃) - 160 95 60 35 - 140 90 -
Mooney Viscosity(ML1+10, 121℃) - 115 70 45 - - 100 65 120
Glass TransitionPoint (℃) -3 -3 -3 -3 -3 -3 -3 -13 -3
Appearance Brown White Brown White
Cure Type Peroxide Cure Electron Beam Cure Peroxide Cure
Features High Strength General Extrusion Lining Extrusion For Low Temperature Extrusion


Basic Properties of AFLAS®

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.

  • An example of Engine Oil Component
  • Application for Automotive Fluids
  • Oil Resistance
エンジンオイルの成分例

Application for Automotive Fluids : AFLAS® vs. FKM
Suitable Applicable Caution Not applicable

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   -

■ Engine Oil ( SM, Immersed at 175℃ )

エンジンオイル

■ CNG Automotive Engine Oil ( Immersed at 175℃ )

CNG 車用エンジンオイル

AFLAS® offers excellent electrical properties in comparison to all other vinylidenfluoride type fluororubbers.

  • Electrical
    Properties
  • Electrical
    Resistivity vs. Temperature
  • Fundamental Properties of the AFLAS®
    Vulcanizate by Electron Beam*
Volume Resistivity(Ω·cm) Dielectric Constant(1kHz) Dielectric Loss(1kHz) Dielectric Breakdown(kV/mm)
AFLAS®( 100, 150, 300S ) 3×1016 2.8 0.03 23
AFLAS® ( 200P ) 4×1015 5.9 0.03 16
FKM 2×1013 17 0.03 20
EPDM 5×1016 2 0.0015 40
Silicone Rubber 5×1015 3~4 0.007 25
IIR 1×1015 3 0.005 30
SBR 1×1015 2~3 0.006 25
Chloroprene Rubber 2×1013 7 0.04 15

Pure rubber compound at R.T.

電気特性の温度依存性
Grade AFLAS® 100S AFLAS® 150E AFLAS® 150C AFLAS® 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℃, Ω·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.


Chemical Resistance of AFLAS®

AFLAS® is highly resistant to a wide range of chemicals, such as acid, base and steam.
AFLAS® has superior resistance to strong bases in comparison with FKM.
AFLAS® finds ever-increasing applications thanks to these unique properties.

Examples of immersion tests


Sample A
28% Ammonia water (Room Temperature for 1000 hours)

150P

AFLAS® 150P

FKM(Peroxide curable terpolymer)

FKM(Peroxide curable terpolymer)

FKM(Bisphenol curable dipolymer)

FKM(Bisphenol curable dipolymer)

Sample B
Ethylenediamine (Room Temperature for 70 hours)

150P

AFLAS® 150P

パーオキサイド加硫

FKM(Peroxide curable terpolymer)

ポリオール加硫

FKM(Bisphenol curable dipolymer)

Sample C
Anti-corrosive A 1% aq. (140℃ for 70 hours)

150P

AFLAS® 150P

パーオキサイド加硫

FKM(Peroxide curable terpolymer)

ポリオール加硫

FKM(Bisphenol curable dipolymer)

Sample D
Anti-corrosive B 1% aq. (140℃ for 70 hours)

150P

AFLAS® 150P

パーオキサイド加硫

FKM(Peroxide curable terpolymer)

ポリオール加硫

FKM(Bisphenol curable dipolymer)

Immersion tests in other conditions


動画

28% Ammonia water ( 50℃ for 120 hours )

Download
動画

NMP ( 25℃ for 24 hours )

Download
動画

Acetyl hydroperoxide ( Room Temperature for 24 hours )

Download
動画

Ethylenediamine ( Room Temperature for 24 hours )

Download

Selection Guide Chemical Resistance


Compatibility Guide (PDF:84KB)



Cost Advantage of AFLAS®

AFLAS® has much better chemical resistance than FKM and is more cost effective than FFKM. Using AFLAS® will probably mean a significant reduction in your production costs.

Case 1


O-ring:AS568A-386
Application Semi-conductor production line
(75℃, Mixture of Ammonia and H2O2)


Price comparison
FFKM : AFLAS®
||
50 : 1
(FKM cannot be considered because of its poor base resistance).

Case 2


O-ring JIS P-35
Application:Mechanical Seal(80℃, Oil with Amine additives)


Price comparison
FFKM : AFLAS®
||
50 : 1
(FKM cannot be considered because of its poor base resistance).

If you are currently using costly FFKM, why not try AFLAS® ?
There could be a considerable cost advantage in changing over to AFLAS®.




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