Vamac® & Viton® performance in new automotive fluids Vamac Viton performance in new...Vamac® &...

Vamac® & Viton® performancein new automotive fluids

DuPont Performance Polymers ConferenceDuPont Performance Polymers Conference

May 20May 20th,th, 20102010

AlbergoAlbergo CoccaCocca HotelHotel

SarnicoSarnico ((BgBg)) Patrick Patrick PagliaPaglia & Laurent Lefebvre& Laurent Lefebvre

Vamac® & Viton® performance to :

1. Engine & Transmission Synthetic Oils

2. Biofuels

3. Blow-By & Exhaust Gas Acid Condensates

4. AdBlue® Urea

Agenda

3

Vamac® performance in Engine Oils

recommended by VW group

-5

-3

-1

1

3

5

7

9

11

13

15V

olu

me s

well

(%

)

Castrol GXL

10W40

Shell Helix

Plus 5W40

Elf Excellium

LDX 5W40

Castrol SLX

Long life II

0W30

Castrol SLX

Long life III

5W30 (low

SAPS)

Mobil 1 ESP

Formula 5W30

(low SAPS)

Volume swell after 1 week @ 150°C

(Standard Compounds, 10 phr plasticiser, 70 sh.A)

Vamac® G

Vamac® GLS

Fuel EconomyLow SAPS oils

Fuel Economy

Standard

VW 502.00 & VW 505.00 VW 503.00 & VW 506.00 VW 504.00 & VW 507.00

4

-5

-3

-1

1

3

5

7

9

Hard

ness c

han

ge (

pts

)

Shell Helix Plus

5W40

Elf Excellium LDX

5W40

Castrol SLX Long

life II 0W30

Castrol SLX Long

life III 5W30 (low

SAPS)

Mobil 1 ESP

Formula 5W30

(low SAPS)

Hardness change after 1 week @ 150 C


Vamac G

Vamac GLS

Low SAPS oils



5

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

Elo

ng

ati

on

ch

an

ge (

%)

Shell Helix Plus

5W40

Elf Excellium LDX

5W40

Castrol SLX

Long life II 0W30

Castrol SLX

Long life III 5W30

(low SAPS)

Mobil 1 ESP

Formula 5W30

(low SAPS)

Elongation change after 1 week @ 150 C


Vamac G

Vamac GLS

Low SAPS oils



6


Recommended by Fiat & Iveco

0

2

4

6

8

10

12

14

16

18

20

Vo

lum

e s

well

(%

)

Urania Turbo LD 15W40

(Iveco)

Selenia 20 K 10W40

(Fiat)

Selenia WR 5W40

(Fiat)

Urania FE 5W30

(Iveco)

Volume swell after 6 weeks @ 150 C


Vamac G

Vamac GLS

Turbo charged or multivalve engines

Fuel economy for new multijet diesel engines

7

-5

-3

-1

1

3

5

7

9

11

13

15

Fuchs Titan

SuperSyn SL

5W30

Shell Helix Ultra

AB 5W30

Fuchs Titan GT1

5W30 (low SAPS)

Castrol SLX LL04

0W30 (low SAPS)

Mobil 1 ESP

Formula 5W30

(low SAPS)

Volume swell after 1 week @ 150 C


Vamac G

Vamac GLS

BMW Long life 01 BMW Long life 04

Low SAPS oils


recommended by BMW group

8

-5

-3

-1

1

3

5

7

9

11

13

15

Vo

lum

e s

well

(%

)

Elf Excellium

LDX 5W40

Fuchs Titan

SuperSyn SL

5W30

Shell Helix

Ultra AB 5W30

Fuchs Titan

GT1 5W30

(low SAPS)

Elf Solaris LSX

5W30 (low

SAPS)

Mobil 1 ESP

Formula 5W30

(low SAPS)



Vamac G

Vamac GLS

MB 229.3MB 229.31 & MB 229.51

MB 229.5

Low SAPS oils


recommended by Daimler group

9


recommended by PSA group

-5

-3

-1

1

3

5

7

9

11

13

15

Vo

lum

e s

well

(%

)

Total Quartz

Diesel 7000

10W40

Total Quartz

Future 9000 5W30

Total G11077

Lube MA3 5W30

Total Quartz Ineo

ECS 5W30 (low

SAPS)

Total G03232

Lube MA4 5W30

(low SAPS)



Vamac G

Vamac GLS

Low SAPS oils

10

0

5

10

15

20

25

30

Volu

me S

well in %

P ento sin

C H F 11S

T o tal

F luide A T X

D exro n II

P etro

C anada

GM D exro n

III R D L

2746

Esso A T F

LT 71141

C astro l

SA F XO

75W90

Esso Gear

o il B V

75W80

P etro -

C anada

D exro n VI

R D L 3434

C astro l

T ransmax

Z 75W90

T o tal

T ranself

Synthese

F E75W90

M o bilube

P T X

75W90

Volume Swell after 6 weeks @ 150°C

(Standard Vamac® compounds, 10 phr plasticiser)

Vamac® G

Vamac® GLS

Traditional fluids New fluids

Vamac® performance in Transmission Fluids

11

Viton® Polymers in Powertrain Lubricants

Degree of Base Resistance required

EngineAxle &

Wheel bearing

Gear box &

Transmission

GF-S, 1000 hrs

BP Cecilia 20

5W40 engine oil

GF-S, 1000 hrs

ESSO Dexron III ATFGF-S, 1000 hrs

Mobile Axle lube

Su

gg

ested

Po

lym

er

B-651C, 500 hrs

BP Cecilia 20

5W40 engine oil

B-651C, 500 hrs

Shell Helix ® Ultra

0W40 engine oil

bisphenol cured

B-651C

un-aged

B-651C, 500 hrs

ESSO Dexron III ATF

B-651C, 1000 hrs

Mobile Axle lube

VTR-8802, 1000 hrs

Mobile Axle lubeVTR-8802, 1000 hrs

ESSO Dexron III ATF

Viton TBR-S (=VTR-8802) was currently a development for US OEMs for some highly aggressive wheel and axle lubesSo far limited interest for the European market

12

Viton® in demanding lubricantsAutomatic Transmission Fluid @ 150°C

0

20

40

60

80

100

120

0 500 1000 1500 2000 2500 3000 3500Hours

Perc

en

t re

tain

ed

Elo

ng

. (%

)

TBR-S

GLT-S

GBLT-S

GF-S

GBL-S

A-401C

0

20

40

60

80

100

120

0 500 1000 1500 2000 2500 3000 3500

Perc

en

t re

tain

ed

Elo

ng

. (%

)

TBR-S

GLT-S

GBLT-S

GF-S

B-651C

GBL-S

A-401C

Petro Canada Dexron VI

Petro Canada Dexron III

Hours

13

Mixture Engine Oil 15W40 / Diesel + BiodieselVamac® Volume Swell

•Increase in volume with switch from test tube to pressure vessel.

•Further increase in volume with addition of diesel or biodiesel RME

•No difference between conventional diesel & biodiesel B20.

Volume IncreaseVamac® G

gasket

Vamac® GLS

gasket

VMX 3038

turbocharger

hose

15W40 -- Test Tube

0

1 14 5 23

3 15 7 24

6 13 5 22

15W40 -- Pressure Vessel

0

1 17 9 27

3 19 10 29

6 18 9 27

15W40 -- with 7% B20 (Ford)

0

1 22 12 33

3 21 11 31

6 22 12 3215W40 -- with 7% Diesel

0

1 22 13 33

3 20 11 30

6 22 12 31

Fluid ageing tests : 1, 3 & 6 weeks @ 150°C

Engine Oil - 15W40 Valvoline "Premium Blue" Diesel Fuel - local supply in Akron, OH (USA)RME Biodiesel fuel - B20 from Haltermann’s in Texas (USA)

14

Permeation Values for different elastomers in blend of

98% Motorcraft oil 0W30 with 2% CE10

Measured at 40°C

Units are in g / mm thickness / m2 / day

Mixture Engine Oil 0W30 / Fuel CE10Permeation: Comparison AEM, ACM, HNBR

CE10 :

• 45% toluene

• 45% isooctane

• 10% ethanol

AEM ACM HNBR

Ethanol 7.58 13.51 6.59

Octane 0.13 0.44 0.20

Toluene 3.63 10.59 3.67

Total 11.35 24.54 10.47

w/o ethanol 3.76 11.03 3.88



2. Biofuels


4. AdBlue® Urea

Agenda

16

Material Performance to Fuel/Biofuel

6500

1100

635

85

35

12

3

0.5

0.2

0.05

0.03

0.01 0.1 1 10 100 1000 10000

Silicone (VMQ)

NBR / HNBR

Fluorosilicone (FVMQ)

Nylon 12

Viton® A

Viton® B

Viton® GF

THV 500

Tefzel® ETFE

Teflon® PTFE

Teflon® FEP

g-mm/m2/d

(Log chart)

higher fluorine =

lower permeation

Permeation rate

Fuel Permeation: Material Choices for Reducing Permeation Losses

fuel system elastomer films to M15 fuel @ 23°C

17

Viton® bioethanol resistanceVolume swell

Volume Change in Bioethanol & fuel blends1008 hours at 40°C (weekly fuel change)

0

5

10

15

20

25

GLT-

600S

A-601C GBLT-

600S

B-601C GFLT-

600S

VTR-

9209

F-605C GF-

600S

fluorine (wt %)

Vo

lum

e C

han

ge, %

Fuel C

CE-10

CE-25

CE-50

CE-85

E-100

low high

18Peak permeation at ~25% Ethanol in Fuel CPeak permeation at ~25% Ethanol in Fuel C

Viton® bioethanol resistancePermeation Rate

Permeation of Fuel C / Ethanol Blends

1008 hours at 40°C

0

20

40

60

80

100

120

GLT-S A-601C GBLT-S GFLT-S B-601C F-605C GF-S

fluorine (wt %)

Perm

rate

(g

-mm

/m²/d

ay)

Fuel C

CE-10

CE-25

CE-50

CE-85

E-100

low high

19

Performance of VitonPerformance of Viton®®

with different Bioalcoholswith different Bioalcohols

Volume Change in Bio-alcohols & fuel blends168 hours at 40°C

0

3

6

9

12

15

18

21

24

27

GLT-

600S

A-601C GBLT-

600S

B-601C GFLT-

600S

VTR-

9209

F-605C GF-

600S

fluorine (wt %)

Vo

lum

e C

han

ge, %

ButanolEthanolFuel CFuel C/Butanol (80/20)Fuel C/Ethanol (75/25)

low high

20

•Pure & Fresh Biodiesel is not agressive to FKM compounds

•High Swell of standard FKM is caused by a seconder order effect:- Contamination (water, residual catalyst, …)

- Degradation products (acids, aldehydes, …)

Viton® performance in “pure & fresh” Biodiesel

21

fuel change at test interval

0

20

40

60

80

100

120

"NMO" GBL-S "NMO" GF-S GBL-S

Ca(OH)2

A401C F605C

Vo

lum

e C

han

ge, %

336 hours

672 hours

1008 hours

1512 hours

2016 hours

3024 hours

Wet = addition of 0.5% distilled water to RME

"NMO"= No Metal Oxide formulation

Viton® performance in “aggressive” Biodiesel

Aged in “wet” B100 RME at 125°C – Volume change (%)

22

Viton® performance in “aggressive” Biodiesel

Aged in “wet” B5 RME at 125°C – Volume change (%)

No Metal Oxidein compounds

Presence of metal oxide

Best recommendation : Viton® APA peroxide cured without metal oxide

23

Vamac® results in Fam-B & in Biodiesel

*Significant swell and property loss in gasoline

*After redrying, properties go back to original excellent value

*Swell can be reduced only to a limited extent with Vamac® GLS & VMX 3110

*2% and 5% blends of biodiesel fuels are compatible with Vamac® G

*For the 20% blend use of Vamac® GLS is appropriate

Vamac® volume swell after 1 week @ 23°Cin Fuel/RME Biodiesel

0

20

40

60

80

100

120

0 10 20 30 40 50 60 70 80 90 100

% RME in the blend Fuel #2 + RME

% V

olu

me

Sw

ell

.

G standard

G/GLS (50/50) standard

GLS standard



2. Biofuels


4. AdBlue® Urea

Agenda

25

Why Vamac® for Blow-By Applications ?

ECO is the polymer that was traditionally used in PCV tubes. Problems of ECO:

- Lead is used as stabilizer

- Poor heat resistance or scorch issue with ECO lead free

- Acid resistance limited

0.0%

20.0%

40.0%

60.0%

80.0%

100.0%

120.0%

1

Rete

nti

on

of

Elo

ng

ati

on

, %

Vamac® G

Vamac® GLS

ECO ( Lead-Free )

0

20

40

60

80

100

120

140

1

Volu

me S

well, %

Vamac® G

Vamac® GLS

ECO ( Lead-Free )

Vamac® G Vamac® GLS

ECO

ECO & Vamac® after 1 week @ 90°C

Swell in Blow-By condensate from Ford

ECO & Vamac® after 1 week @ 90°C

Elongation Retention in Ford‘s Acid Condensate

Ford acid condensate chemical composition:14.0 ml Methanoic ( Formic ) Acid 11.0 ml Nitric Acid15.0 ml Ethanoic ( acetic ) Acid 1.0 ml Hydrochloric Acid

1.0 ml Sulphuric Acid 958.0 ml Distilled Water

26

Temperature °C

135

60

15

0 6 12 18 24

30 min dry

30 min FAM2

30 min dry

18 h in Cecilia 20, 5W40

4 h HNO³

30 min dry

1 Cycle

VW TL52291, Blow-by specification

PV3936 test conditions

Standard fluid ageing tests in Cecilia 20, Diesel & Fam B are requested in VW TL52291 spec.

PV 3936 is part of air duct specification if resistance to crankcase gases (blow-by gas) and

condensates of these gases are required. Rubber has to pass a number of cycles.

Performance:

Vamac® = 16 cycles

HNBR = 8 cycles

ECO = 1 cycle

27

0

50

100

150

200

250

300

Original 1 cycle 2 cycles 3 cycles 4 cycles 5 cycles 6 cycles

Hardness

Tensile * 10

EaB

Weight Change * 10

In spec. VW TL 52291 after 6 cycles, changes in properties and remaining values have to be:

Hardness >=55 Shore A (Change max. -20%) Tensile >= 6 Mpa (max. -40%)

Weight Change max. +20% Elongation >= 80% (max. -65%)

PV3936, Vamac® GLS compound

from customer tested by DuPont

28

1

2

3

4

5

pH

Acid Type

Phase

Time

Temperature

Equipment

Aeration

Sample

Mineral

Organic

Mineral /Organic

Liquid Gas

504 h

1008 h

2000 h

Yes No

Autoclave

Reflux

Finished Parts

Lab Specimens

50°C

100°C

150°C

168 h

Exhaust Gas Recirculated test parameters

HCl, HNO3, H2SO4 => mineralHCOOH, CH3COOH => organicSalts of acidsOther acids…

60°C up to 150°C with average 80-90°C

Vapour (= gas phase) or Condensate (= liquid phase)

168 h (short term) up to 2008 h (long term)

with or without

1 up to 5 with average 3

Which parameters might influence the test ?

Size and shape

Autoclave or reflux system

29

Two sets of lab specimens tested in the autoclaves (liquid phase & gas phase)

Autoclave equipment used in DuPont

Diameter: 97 mmLength: 204 mmVolume: around 2 litres

Thickness: 5 mmMaterial: stainless steel 316L

Valves: Swagelok® serie R3A, (ref. SS-4R3A adjusted 3.4 -24.1 bars)

30

EGR acid solutions selected

First EGR solution (pH =3.3) defined by PSA

2.81NaOH

1.83H2SO4

0.14HNO3

4.23NaCl

0.86KF

mmol/l

Concentration

PSA EGR chemical composition: only mineral based, pH 3.3

VW EGR chemical composition: organic based, pH 3.0

First EGR solution (pH =3.0) defined by VW

10.68CH3CH2COOH

24.66HCOOH

0.57(NH4)2SO4

0.44NH4NO3

3.56CH3CO2NH4

mmol/l

Concentration

Lab tests made with fluids

close to OEM reference

N-B: PSA & VW EGR acid solutions above have been modified recently

31

PSA EGR liquid contact, 168 h @ 90°C

17

-12

17

13

-9

12

16

-10

125

9

0 00 0

-3

0

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)

Tensile change (%) Elongation change (%) Volume Swell (%)


Viton® A401C Viton® GF-200S

Viton® GF-200S with MO

Vamac® & Viton® results: Influence of acid type

VW EGR liquid contact, 168 h @ 90°C

147

1

19

38

145

-3

6

-2

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)

Tensile change (%) Elongation change(%) Volume Swell (%)

Vamac® GVamac® GLSViton® A401C ("destroyed")Viton® GF-200SViton® GF-200S with MO ("destroyed")

VW EGR exposure

VW EGR exposure

● Vamac® performs well in mineral & organic acids

● Compounds of Viton® without metaloxide have very good resistance to all acid types

● Compounds of Viton® with metaloxide is not recommended for use with organic acids

Viton A401C®® ®

32


17

3

-9

12

1

-7

-40 -39

-8

-37

-2-9

21

-39

-26

-37

0

-3

14

-33

-19

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)

Tensile change (%) Elongation (%) Volume Swell (%)

Vamac® GLS Viton® GF-200S

Standard ACM 'HT-ACM'

CPE ECO

Other elastomers: Influence of acid type


71

19

3

-7

-31

-41

-8

-36-32

14

-3

6

-2

15

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)




CPE ("destroyed") ECO ("destroyed")

VW EGR exposure

127 PSA EGR exposure

CPE

ECOViton® GF-200S

● Standard ACM, ECO & CPE: poorresistance to EGR in this lab evaluation

● ’HT-ACM’ has poor retention of mechanical properties vs Vamac®

75

84

33


-3

147

-2

1

19

38

145

6

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)

Tensile change(%) Elongation change (%) Volume Swell (%)

Vamac® GVamac® GLSViton® A401C ("destroyed")Viton® GF-200SViton® GF-200S with MO ("destroyed")

Vamac® & Viton® results: Gas vs liquid phase

VW EGR gas contact, 168 h @ 90°C

-6 -4

11

-16

-39

-18

36

-2 -1

13

311

-5-1

-7

0

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)


Vamac® G

Vamac® GLS

Viton® A401C

Viton® GF-200S

Viton® GF-200S with MO ("destroyed")

● Gas Phase is nearly as aggressiveas liquid phase, even at 90°C only

● Gas phase is less agressive thanliquid phase for Viton® A401 C

34

VW EGR liquid contact, volume swell

Vamac® & Viton® results :

Influence of test temperature

139

16

-2

15

83

7 655

-50

-40

-30

-20

-10

0

10

20

30

40

50

Vamac® G Vamac® GLS Viton® GF-200S HT-ACM

168 h @ 90°C 168 h @ 120°C 168 h @ 150°C

-16

-32-29

27

-32

4 36 4

15

-50

-40

-30

-20

-10

0

10

20

30

40

50


168 h @ 90°C 168 h @ 120°C 168 h @ 150°CVo

lum

e s

well (

%)

15

-36

53

14

-3

-33

-21

-41

28 29

-50

-40

-30

-20

-10

0

10

20

30

40

50


168 h @ 90°C 168 h @ 120°C 168 h @ 150°C

VW EGR liquid contact, elongation change

VW EGR liquid contact, tensile change

Ten

sile c

han

ge (

%)

Elo

ng

ati

on

ch

an

ge (

%)

-56 -64

-82

276

● Vamac® clearly performs betterthan HT-ACM

35

VW EGR acid solution - liquid contact, 94 h @ 100°C, pH =3

VW EGR liquid contact, 94 h @ 100°C, pH =1.6

1 0

-5

19

-7

-39

-8

-38

-1

6

-3

11

3 1

-2

4

-49

-40

15

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)



Viton® GF-200S Standard ACM

'HT-ACM'

-2 -4

-16

105

-9

-36

-10

0

-4 -3

11 11

-8 -7

-49

22

-49-44

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)




'HT-ACM'

93

79

● Volume swell increases with low pH value

● Mechanical properties worsen with lower pH but the drop remains moderate for Viton®

GF-S without metal oxide and bothcompounds of Vamac®

● Is ACM or “HT-ACM” suitable for sealing applications in contact with acid ?

Vamac® & Viton® results: Influence of pH

36

Autoclave, no stirring system, no aeration


1 07

-3-8

11

19

0

9

0

-3

-39-40

-7

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)




Vamac® & Viton® results:

Influence of equipment, aeration

No significant difference betweenthese 3 methods:

● Viton® GF-200S no MO - Very good

● Vamac® G & GLS - Good

-3 -2

7

-2-6

17

28

0 0

-4 -4

-42

-31

-9

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)




-2

3 6

-2-7

15

16

-1

83 2

-31-33

-7

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)




Reflux with stirring system + aeration 200 ml/min,

PSA EGR liquid contact, 168 h @ 90°CReflux with stirring system, no aeration


75

72

71

37

Acid Resistance Conclusion of DuPont lab study

� ECO, CPE (CM): Can be significantly affected in acid condensates (EGR, Blow-by) �Increased risk of failure for the parts exposed to EGR

� ACM, HT-ACM: Shows severe effects in the various tests�Careful study for each application

� Vamac® AEM : Standard compounds demonstrate excellent resistance to exhaust acids and gases �� Vamac® can be recommended for cost-effective EGR hose and

sealing solutions

� Viton® FKM: Standard compounds do perform well in these acidic environments,even when highly concentrated and/or at high temperature – caution with organic acids…

�� Viton® recommended broadly for use in contact with EGR.�� Viton® peroxide cured compounds without metal oxide, are the

ultimate choice



2. Biofuels


4. AdBlue® Urea

Agenda

39

AdBlue® System

For elastomeric materials which are used in contact to AdBlue®, additional resistance to Diesel or Engine oils is very often required.

This eliminates non-polar materials like EPDM.

40

Vamac® Ageing in AdBlue® for 168 h at 120°C

� Tests were carried out in a lab autoclave using a Kalrez® FFKM seal.

� Vamac® GLS with its high Methyl Acrylate content lost all its elastic properties after 1 week at 120°C.

� Vamac® G is also loosing most of its elastic properties.

� The high viscosity grade Vamac® Ultra IP maintain most of his properties, only the Modulus

shows a significant increase.

� The peroxide cured Vamac® DP performs best in terms of Modulus retention

20157721Weight Change

22168923Volume Change

3480--Delta 100% [%]

2,810,2--Modulus at 100 % [MPa]

-41-28-89-64Delta Elong. [%]

3082212685Elongation at break [%]

1620-79-43Delta TS [%]

11,021,23,59,8Tensile Strength [MPa]

-13-20-1Delta Hardness

61755471Hardness Shore A (1 second)

Vamac®DP

Vamac®Ultra IP

Vamac®GLS

Vamac®GLiquid Phase

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� Vamac® has long-time proven functionality in automotive hoses and seals and meets automotive low- and high-temperature requirements (-40°C to 170°C with peaks up to 200°C), as well as good fluid resistance (e.g. engine oil and Diesel fuel)

� Vamac® Ultra grades at medium methyl acrylate levels (=Vamac® Ultra IP & VMX 3038) keep their elastomeric properties after immersion in AdBlue® for 1 week at 120°C -> other tests with different ageing conditions (80°C, 100°C up to 6 weeks) are in progress

� Peroxide cured Vamac® DP also can be seen as a material with possible use for AdBlue®, with higher comp set results (especially VW comp.set) may however be seen not as good for sealing applications

� Vamac® offers an excellent price/performance ratio compared to HNBR or FKM grades that can be considered suitable for contact to AdBlue®

Vamac® - AdBlue® Summary

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The information set forth herein is furnished free of charge and is based on technical data that DuPont believes to be reliable and falls within the normal range of properties. It is intended for use by persons having technical skill, at their own discretion and risk. This data should not be used to establish specification limits nor used alone as the basis of design. Handling precaution information is given with the understanding that those using it will satisfy themselves that their particular conditions of use present no health or safety hazards. Since conditions of product use and disposal are outside our control, we make no warranties, express or implied, and assume no liability in connection with any use of this information. As with any product, evaluation under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate or a recommendation to infringe on patents.

Caution: Do not use in medical applications involving permanent implantation in the human body. For other medical applications, discuss with your DuPont customer service representative and read Medical Caution Statement H-50103-3.

The DuPont™ Oval logo, DuPont™, The miracles of science™, Crastin®, Delrin®, DuPont™ ETPV, Hytrel®, Minlon®, Rynite®, Thermx®, Zenite®, Zytel®, Diak™, Viton® and Vamac® are registered trademarks of E.I. DuPont de Nemours or its affiliates.

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Mixture Engine Oil Valvoline 15W40 / Diesel + BiodieselVamac® Absolute Elongation and % Elongation Change

Change in control going from test tube to pressure vessel

appears to have bigger effect than addition of diesel or biodiesel

Percent ElongationVamac® G

gasket

Vamac® GLS

gasket

VMX 3038

turbocharger

hose

Vamac® G

gasket

Vamac® GLS

gasket

VMX 3038

turbocharger

hose

1 2 3 1 2 3

15W40 -- Test Tube0 269 277 431 0% 0% 0%

1 209 192 379 -22% -31% -12%

3 190 161 340 -29% -42% -21%

6 167 129 288 -38% -53% -33%

15W40 -- Pressure Vessel0 269 277 431 0% 0% 0%

1 200 190 357 -26% -31% -17%

3 168 135 253 -38% -51% -41%

6 114 101 259 -57% -63% -40%

15W40 -- with 7% B20 (Ford)0 269 277 431 0% 0% 0%

1 197 184 323 -27% -33% -25%

3 172 129 295 -36% -53% -32%

6 118 83 250 -56% -70% -42%

15W40 -- with 7% Diesel

0 269 277 431 0% 0% 0%

1 194 179 343 -28% -36% -20%

3 142 130 301 -47% -53% -30%

6 129 105 242 -52% -62% -44%

% change from originalAbsolute Values

Fluid ageing tests : 1, 3 & 6 weeks @ 150°C

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Viton® Permeation resistance to fuel & biofuel

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-3

7

-2

1

19

3

-7

-31

-41

-8

-36-32

1514

6

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)





Other elastomers: Gas vs liquid phase

VW EGR gas contact, 168 h @ 90°C

-6 -4

11

-2 -1

13

3

-7

-20-24

38

-11

-42 -42

14

0

-50

-40

-30

-20

-10

0

10

20

30

40

50

Hardness change

(points)





Other polymers are impacted even more

� Will CPE & ECO be ok for use even underEuro 6 conditions?

� Is ACM or “HT-ACM” suitable for sealing applications in contact with EGR?

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