Selection Guide for Viton® fluoroelastomers

Selecting the Correct Type of Viton ®
Differences in Fluids Resistance and Low Temperature
Family and Type Of Viton ® Fluoroelastomer
A B F GB GF GLT GFLT ETP
Cure System
Bisphenol
Peroxide
Aliphatic hydrocarbons, process fluids, chemicals 1 1 1 1 1 1 1 1
Aromatic hydrocarbons (toluene, etc.),
process fluids, chemicals 2 1 1 1 1 2 1 1
Automotive and Aviation Fuels
(pure hydrocarbons — no alcohol) 1 1 1 1 1 1 1 1
Automotive fuels containing legal levels
(5–15%) of alcohols and ethers
(methanol, ethanol, MTBE, TAME) 2 1 1 1 1 2 1 1
Automotive/methanol fuels blends
up too 100% methanol (flex fuels) NR 2 1 2 1 NR 1 1
Engine lubricating oils (SE-SF grades) 2 1 1 1 1 1 1 1
Engine lubricating oils (SG-SH grades) 3 2 2 1 1 1 1 1
Acid (H 2 SO 4 , HNO 3 ), hot water, and steam 3 2 2 1 1 1 1 1
Strong base, high pH, caustic, amines NR NR NR NR NR NR NR 1–2
Low molecular weight carbonyls —
100% concentration (MTBE, MEK, MIBK, etc.) NR NR NR NR NR NR NR 1–2
Low temperature sealing capability, TR-10 test results –7°C –14°C –7°C –15°C –6°C –30°C –24°C –11°C
selection guide
for Viton ® fluoroelastomers
1 = Excellent, minimal volume swell 2 = Very Good, small volume swell 3 = Good, moderate volume swell
NR = Not Recommended, excessive volume swell or change in physical properties
For further information please contact one of the offices below, or visit our website at
www.dupontelastomers.com/viton
Global Headquarters — Wilmington, DE USA
European Headquarters — Geneva
Tel. +1-800-853-5515 Tel. +41-22-717-4000
+1-302-792-4000 Fax +41-22-717-4001
Fax +1-302-792-4450
South & Central America Headquarters — Brazil
Asia Pacific Headquarters — Singapore
Tel. +55-11-4166-8978 Tel. +65-6275-9383
Fax +55-11-4166-8989 Fax +65-6275-9395
Japan Headquarters — Tokyo
Tel. +81-3-6402-6300
Fax. +81-3-6402-6301
The information set forth herein is furnished free of charge and is based on technical data that DuPont Performance Elastomers believes to be reliable. It is intended
for use by persons having technical skill, at their own discretion and risk. 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 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 or a recommendation to infringe on patents. While the
information presented here is accurate at the time of publication, specifications can change. Check www.dupontelastomers.com for the most up-to-date information.
Caution: Do not use in medical applications involving permanent implantation in the human body. For other medical applications, discuss with your DuPont Performance
Elastomers customer service representative and read Medical Caution Statement H-69237.
DuPont is a trademark of DuPont and its affiliates.
Viton ® and Diak are registered trademarks or trademarks of DuPont Performance Elastomers.
Copyright © 2006 DuPont Performance Elastomers. All Rights Reserved.
(08/06) Printed in U.S.A.
Reorder no: VTE-H73453-00-C0806

Viton ® Fluoroelastomers Selection Guide
Viton ® Product Name
Nominal
Viscosity
(ML 1 + 10
at 121°C)
Specific
Gravity
Polymer
Fluorine
Content,
%
Compression
Set, %
70 hr at 200°C
Temperature
Retraction
(TR-10), °C
Increase,
CM-15 (3)
Fuel at
23°C
Compression
Molding
Transfer
Injection
Process
Metal bonding
Extrusion
Others
Calendering
Coatings
Product Description
O-rings
Shaft Seals
Gaskets
Typical Uses
Complex
molding
Hose / Tubes
Coatings /
Mastics
FDA Compliant (4)
Suggested Uses
A and AL types: Standard FKM — excellent compression set and heat resistance
Curative Containing Precompounds (“C” at end of product name)
A-331C 30 1.81 66 20 –17 30% X X X X Good mold flow and hot tear for molded seals. X X X X X General purpose molded seals — good hot tear.
A-361C 30 1.81 66 17 –17 30% X X X X X Good mold flow and bonding to steel inserts. X X X Shaft seals/molded seals — bonded to metal.
VTR-9180 (2) 30 1.81 66 18 –17 30% X X X X Excellent processing for automated injection molding. X X X X A-type for o-ring automated injection molding.
A-401C 40 1.81 66 15 –17 30% X X X Good compression molding type for o-rings and low c/s. X X X X X X O-rings, gaskets, and seals — compression molded. AMS-83248
A-601C 60 1.81 66 11 –17 30% X X X Higher viscosity compression molding type — very low c/s. X X X Higher viscosity — optimal compression set. AMS-83248
VTR-9192 (2) 32 1.76 66 25 –19 32% X X X Improved low temp AL for automated injection molding. X X X X Full automatic injection molding of o-rings and seals.
Gum Polymers — gums compounded with ~2.5 phr of VC50
A-100 10 1.82 66 21 –17 30% X X X X X Ultra-low viscosity A-type gum. X X X X Coatings and viscosity modifier when blended with other gums.
A-200 20 1.82 66 16 –17 30% X X X X X X Low viscosity A-type gum. X X X X X X X O-rings, seals, gaskets, and extruded goods.
A-500 50 1.82 66 14 –17 30% X X X X X Medium viscosity A-type gum. X X X X X X X O-rings, seals, gaskets, and extruded goods.
A-700 70 1.82 66 11 –17 30% X X X X Medium/High viscosity A-type gum. X X X O-rings, seals, gaskets, and extruded goods.
AHV 160 (1) 1.82 66 10 –17 30% X X Ultra-high viscosity A-type gum. X X X O-rings, seals, and gaskets.
AL-300 30 1.77 66 25 –19 32% X X X X X X Low viscosity AL-type gum. X X X X X X O-rings, seals, gaskets, and extruded goods.
AL-600 60 1.77 66 14 –19 32% X X X X X X Medium viscosity AL-type gum. X X X X X X O-rings, seals, gaskets, and extruded goods.
B types: 68% fluorine FKM — improved fluids resistance with good compression set
Curative Containing Precompounds (“C” at end of product name)
VTR-9176 (2) 40 1.85 68.5 25 –14 15% X X X X B-type precompound for automated injection molding. X X X X B-type for seals that are automated by injection molding.
B-651C 60 1.85 68.5 30 –14 15% X B-type precompound for compression molding/bonding. X X X X Compression molded oil and shaft seals bonded to metal.
VTR-9217 (2) 20 1.82 69.1 31 –13 14% X Precompound for extruding fuel and filler neck hose. Best processing. X X X X Fuel and filler neck hose.
VTR-9209 (2) 30 1.86 69.1 33 –11 14% X Precompound for extruding fuel and filler neck hose. Lowest fuel perm. X X X X Fuel and filler neck hose.
Gum Polymers — gums compounded with ~2.5 phr of VC50
B-202 25 1.86 68.5 34 –14 15% X X 20 Mooney, low viscosity B-type gum. X X X X X X O-rings, seals, gaskets, and extruded goods.
B-600 60 1.86 68.5 22 –14 15% X X X 60 Mooney, medium viscosity B-type gum. X X X X X X X O-rings, seals, gaskets, and extruded goods.
Peroxide Curable B-type Gum Polymers — made with Advanced Polymer Architecture technology
GBL-200S 25 1.84 67.7 25 –16 23% X X X X X 25 Mooney, low viscosity peroxide curable GBL-type gum. (Formerly VTR-8655.) X X X X X X X Seals and extruded goods with improved steam, water and acid resistance.
GBL-600S 65 1.84 67.7 25 –16 23% X X X X X X X 65 Mooney, peroxide curable GBL-type gum. (Formerly VTR-8650.) X X X X X X X Seals and extruded goods with improved steam, water and acid resistance.
F types: 70% fluorine FKM — best hydrocarbon/fluids resistance with good compression set
Curative Containing Pre-compounds (“C” at end of product name)
F-605C 60 1.90 70 28 –6 8% X X X X F-type precompound for compression molding. X X X Molded seals and o-rings for fuel sys. Used for M2D401-A8 & A9 specifications.
VTR-9216 (2) 42 1.90 70 28 –6 8% X X X X F-type precompound for injection and transfer molding. Injection molded seals and o-rings.
Peroxide Curable F-type Gum Polymers — made with Advanced Polymer Architecture technology
GF-200S 25 1.90 70.2 25 –5 7% X X X X X 25 Mooney, low viscosity peroxide curable GF-type gum. (Formerly VTR-8605.) X X X X X X X O-rings and seals needing excellent hydrocarbon, alcohol, water, steam, and acid resistance.
GF-600S 65 1.90 70.2 25 –5 7% X X X X X X 65 Mooney, peroxide curable GF-type gum. (Formerly VTR-8600.) X X X X X X X O-rings and seals needing excellent hydrocarbon, alcohol, water, steam, and acid resistance.
Specialties — FKM and FEPM gum polymers made with new Advanced Polymer Architecture technology
Low Temperature — peroxide curable FKM gums
GLT-200S 25 1.78 64 25 –31 33% X X X X X 25 Mooney. Best low temperature flexibility and sealing. (Formerly VTR-8505.) X X X X X X O-rings and seals. Can seal at –40°C in static seal applications.
GLT-600S 65 1.78 64 25 –31 33% X X X X X X 65 Mooney. Best low temperature flexibility and sealing. (Formerly VTR-8500.) X X X X X X O-rings and seals. Can seal at –40°C in static application. Used for AMS-84385.
VTR-8530 (2) 25 1.80 66 25 –27 19% X X X X X 25 Mooney. Higher fluorine/low temperature type. X X X X X X O-rings and seals. Can seal at –40°C in static seal applications.
GBLT-600S 65 1.80 66 25 –27 19% X X X X X X 65 Mooney. Higher fluorine/low temperature type. (Formerly VTR-8525.) X X X X X X O-rings and seals. Can seal at –40°C in static seal applications.
GFLT-200S 25 1.86 67 25 –24 14% X X X X X 25 Mooney. Highest fluorine/low temperature type. (Formerly VTR-8555.) X X X X X X X O-rings and seals needing maximum fuel/alcohol/permeation resistance.
GFLT-600S 65 1.86 67 25 –24 14% X X X X X X 65 Mooney. Highest fluorine/low temperature type. (Formerly VTR-8550.) X X X X X X X O-rings and seals needing maximum fuel/alcohol/permeation resistance.
Viton ® Extreme base resistance types of Viton ® FEPM gums
VTR-8802 (2) 60 1.7 60 40 3 85% X X X X X TFE/P type FEPM with incorporated bisphenol cure system. X X X X X X O-rings and seals needing oil, additive, acid, and base resistance.
ETP-600S 65 1.82 67 45 –10 10% X X X X X Peroxide curable. Resistant to hydrocarbons, alcohol, ketones, acids, bases, and amines.
(Formerly VTR-8710.)
FKM curatives and chemicals
X X X X X X O-rings and seals needing broad fluids resistance. Most universally fluid resistant type of Viton ® .
Good for mixed solvent systems.
VC-50 – 1.38 – – – – – – – – – – – Combination bisphenol accelerator/curative. – – – – – – – Bisphenol AF + accelerator, used to bisphenol cure gum Viton ® .
Diak 7 – 1.16 – – – – – – – – – – – Coagent/crosslinker for peroxide-cure types of Viton ® . – – – – – – – Used as the crosslinker in peroxide cured types of Viton ® .
VPA No.1 – 1.2 – – – – – – – – – – – Wax/Sulfone process aid for Viton ® . – – – – – – – Use at 0.5 to 1.5 phr level to improve mold release.
VPA No.2 – 0.99 – – – – – – – – – – – Waxy process aid for Viton ® . – – – – – – – Use at 0.5 to 1.5 phr level to improve mill, calender, and mold release.
(1) Mooney measured at 150°C.
(2) Products designated ‘VTR’ indicate the material is available for sale based on limited manufacturing and commercial experience.
DPE reserves the right to modify the manufacturing process without notice while maintaining product quality to specifications.
(3) CM-15 is 15% methanol in 85% Fuel C. Fuel C is an aromatic hydrocarbon mixture of 50% isooctane/50% toluene.
(4) Compliant with FDA Food Contact Regulation CFR 177.2600 — Rubber Goods Intended for Repeated Use.
This guide is an overview of the most commonly used types of Viton ® as of July, 2006.
Note: All properties on this table are typical properties and not intended to serve as specifications.