F-605C

Fluoroelastomers

Technical Information
Introduction

Use of Viton™ F-605C

Viton™ F-605C* fluoroelastomer is a new generation
incorporated cure “F-family” terpolymer designed forcompression and transfer molding of seals, gaskets,
and O-rings that require excellent fluids resistance totoday’s automotive fuels. In addition to the heat andchemical resistance characteristics typical of Viton™
fluoroelastomers, Viton™ F-605C offers significant
improvements in processing, rheology, and physicalproperties.

Table 1 compares compounds of Viton™ F-605C with
Viton™ F-601C, A-401C, and B-601C. Table 2 lists
the performance of Viton™ F-605C relative to Ford
Specification M2D401-A8.

Compared with Viton™ F-601C, Viton™ F-605C provides:• Improved processing– Increased mold flow
– Improved mold release– Less mold fouling• Improved extrusion performance

Safety and Handling
Before handling or processing Viton™ F-605C, read andfollow the recommendations in the Chemours technicalbulletin, “Handling Precautions for Viton™ and Related
Chemicals.”
Viton™ F-605C should be handled like other types ofViton™. Keep off skin and wash well after handling. For safe
handling of other compounding ingredients, please referto the respective manufacturers’ information.
Product Description• Excellent compression set resistance• Similar fluids and permeation resistance to automotivefuels (including oxygenated and “sour” fuels)

Chemical Composition

Terpolymer of hexafluoropropylene,
vinylidene fluoride, and tetrafluoroethylene
plus cure chemicals

Physical FormSlabApplications

Color

Off-white

Viton F-605C is recommended for sealing applications,such as fuel systems that require improved fluids andpermeation resistance to fuels (especially oxygenatedand “sour” fuels). Also for compression/transfer moldingof O-rings, gaskets, and diaphragms requiring excellent
chemical resistance.

OdorNoneSpecific Gravity

1.90Solubility

Low molecular weight esters and ketones

Storage Stability

Excellent

Mooney Viscosity, ML 1+10
at 121 °C (250 °F)

60™

*Viton™ F-605C was formerly named VTR-7244.

Viton™

Fluoroelastomers

Table 1. Performance of Viton™ F-605C in Typical Compounds
Viton™ F-605C
100———
36
130

Viton™ F-601C
—100
——
36
130

Viton™ A-401C——100—
36130

Viton F-605C
Viton™ F-601C
Viton™ A-401C
Viton™ B-601C
High Activity Magnesium Oxide
Calcium Hydroxide
Carnauba Wax
MT Black (N990)
Stock Properties
Mooney Scorch, MS at 121 °C (250 °F)
Minimum, in·lb
6155
69
5 pt rise, min
17.8>30>15.7
10 pt rise, min
24.0
—>30
ODR at 177 °C (350 °F), Microdie, 3° arc, 12 min
2116
16ML, in·lb
1.5
2.6
2.1
Ts2, min
4.3
6.1
3.7
Tc90, min
93
85
122
Mc90, in·lb
10193
133
MH, in·lb
MDR 2000 at 177 °C (350 °F), Microdie, 0.5 arc, 6 min
22—
ML, in·lb
1:11
2:04
—
Ts2, min
T’50, min
1:54
2:46
—
T’90, min
3:02
3:40
—
28
25
—
MH, in·lb
Vulcanizate Properties
Slabs cured: 10 ft at 177 °C (350 °F); post-cured: 24 hr at 232 °C (450 °F)
Stress/Strain at 23 °C (73 °F)—Original, Post-Cured
100% Modulus, MPA (psi)
6.1 (885)
6.9 (995)
7.0 (1010)
Tensile Strength, MPa (% change)
14.9 (2,160)
15.2 (2,200)
13.8 (1,925)
Elongation at Break, %250
255
175
Hardness, Durometer A, pts
777978Stress/Strain at 23 °C (73 °F)—After aging 70 hr at 250 °C (482 °F)
100% Modulus, MPA (psi)
5.8 (–5)
7.6 (+10)
6.8 (–2)
Tensile Strength, MPa (% change)
14.6 (–2)
14.9 (–2)
12.8 (–7)
Elongation at Break, %205 (–18)
175 (–31)
172 (–2)
Hardness, Durometer A, pts
767978Stress/Strain at 23 °C (73 °F)—After aging 168 hr at 23 °C (73 °F)/Fuel C-Methanol (85-15)
100% Modulus, MPA (% change)
4.1 (–33)
4.0 (–42)—Tensile Strength, MPa (% change)
10.8 (–28)
9.4 (–38)—
Elongation at Break, %280 (+12)245 (–4)—
Hardness, Durometer A, pts
67
68—
Volume Swell, %910—
Compression Set, Method B, O-Rings, %70 hr at 150 °C (302 °F)
1424—
22 hr at 200 °C (392 °F)
1832
14
70 hr at 200 °C (392 °F)
30
47
20
Low Temperature Properties
DSC (glass transition temperature) Inflection, °C (°F)
–8.1 (17.4)–7.8 (18.0)–15.2 (4.6)™

2

Viton™ B-601C
———
100
361
30

55>30
—
22
2.76.1
106
115
—
———
—

6.7 (975)
14.0 (2,030)
20076
5.0 (–25)
11.7 (–16)
210 (+3)
75——————
1424–13.2 (8.2)

Viton™

Fluoroelastomers

Table 2. Performance of Viton™ F-605C in Ford Specification M2D401-A8
Viton™ F-605C

Viton™ F-605C

Viton™ F-605C

100

100

High Activity Magnesium Oxide

33Calcium Hydroxide

66

Nyad 400

28—®

Ti-Pure R-960

1—

AkronChem 414 Green1—

MT Black (N990)

—

25

™

Vulcanizate Properties

M2D401-A8 (green)
Slabs cured: 10 ft at 177 °C (350 °F); post-cured: 24 hr at 232 °C (450 °F)

Stress/Strain at 23 °C (73 °F)—Original, Post-Cured
Tensile Strength, MPa (psi)11.4 (1,650)

12.8 (1,850)

10.0 min (1,450 min)Elongation at Break, %

270

265

175 min

Hardness, duromater A, pts

71

74

75±5

TR 10 (maximum, °C [°F])–6 (21)–7 (19)–5 (23)

Tear Strength, Die C

142

168

80 minTensile Strength, % change (max.)

0+11±20

Elongation at Break,% change (max.)

–18

–9±20

Hardness, pts change–1+1±5Stress/Strain at 23 °C (73 °F)—After aging 1,000 hr at 200 °C (392 °F)Stress/Strain at 23 °C (73 °F)—After aging 336 hr at 60 °C (140 °F)/ASTM Reference Fuel C
Tensile Strength, % change (max.)–37–20–60

Elongation at Break,% change (max.)–11+6–40

Hardness, pts change–12–11–15

Volume Swell, %+12+12+15

Stress/Strain at 23 °C (73 °F)—After aging 336 hr at 60 °C (140 °F)/Oxidized Fuel (PN 180)
Tensile Strength, % change (max.)–58–49–60

Elongation at Break,% change (max.)+35+49–25

Hardness, pts change–22–23–25

Volume Swell, %+23+20+30

Stress/Strain at 23 °C (73 °F)—After aging 2,000 hr at 60 °C (140 °F)/ASTM Reference Fuel C-Methanol (50-50)
Tensile Strength, % change (max.)—–44–60Elongation at Break,% change (max.)—+22–40

Hardness, pts change—–15–15

Volume Swell, %—+19+25Stress/Strain at 23 °C (73 °F)—After aging 2,000 hr at 60 °C (140 °F)/ASTM Reference Fuel C-Methanol-MTBE (65-20-15)
Tensile Strength, % change (max.)—–54–70Elongation at Break,% change (max.)—+2–45

Hardness, pts change—–20–25

Volume Swell, %—+30+40252535

Compression Set, Method B, % Plied Discs
70 hr at 200 °C (392 °F)

3Viton™

Fluoroelastomers

Test Procedures
Property Measured

Test Procedure

Compression Set

ASTM D395-89, Method B (25% deflection)

Compression Set, O-Rings

ASTM D1414-94

Hardness

ASTM D1229-79 (low temperature)
ASTM D2240-91, durometer A

Mooney Scorch

ASTM D1646-95, using small rotor. Minimum viscosity and time to a1-, 2-, 5- and 10-unit rise are reported.

Mooney Viscosity

ASTM D1646-95, ten pass 121 °C (250 °F)

ODR (vulcanization characteristics measured with an oscillating disk cure meter)

ASTM D2084-93

Property Change After Oven Heat-Aging

ASTM D573-88

Stress/Strain Properties
100% Modulus
Tensile Strength
Elongation at BreakASTM D412-92, pulled at 8.5 mm/sec (20 in/min)

Volume Change in Fluids

ASTM D471-95

Temperature Retraction

ASTM D1329-88

Low Temperature Brittleness

ASTM D2137-94

Test temperature is 24 °C (75 °F), except where specified otherwise.

For more information, visit Viton.com
The information set forth herein is furnished free of charge and based on technical data that Chemours believes to be reliable. It is intended for use by persons having technical skill, at their own
discretion and risk. The handling precaution information contained herein is given with the understanding that those using it will satisfy themselves that their particular conditions of use present
no health or safety hazards. Because conditions of product use are outside our control, Chemours makes no warranties, express or implied, and assumes no liability in connection with any useof this information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate under or arecommendation to infringe any patents.
NO PART OF THIS MATERIAL MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING OR OTHERWISEWITHOUT THE PRIOR WRITTEN PERMISSION OF CHEMOURS.

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Replaces: VTE-H68127-00-D0710
C-10948 (8/16)