Viton® and Vamac families: Chemical structure …

1 viton and Vamac families : Chemical structure and monomer composition Monomers used in viton 2. Carbon Fluorine Hydrogen Oxygen VF2 HFP TFE. H2C=CF2 (59% fluorine) F2C=CF2 (76% fluorine). vinylidene fluoride F2C=CF-CF3 (76% fluorine). tetrafluoroethylene hexafluoropropylene E P. PMVE. H2C=CH2 H2C=CH-CH3. F2C= CF-O-CF3 (69% fluorine) ethylene propylene April 13, 2010. perfluoromethylvinylether DuPont Confidential viton Fluoroelastomer families - 3. Monomer Composition VF2 HFP TFE PMVE P E CSM*. *Cure Site Monomer (composition depends on polymer). B GAL-S GLT-S. F GBL-S GBLT-S. AL GF-S GFLT-S ETP-S TBR-S. A. 66%F 66-70%F 66%F 60%F. viton made with APA. Low Temperature viton ExtremeTM. Standard viton Specialty viton . April 13, 2010 DuPont Confidential families of viton 4. Standard viton Specialty viton . Low Temperature A and GLT-S family GAL-S families Decreasing Hydrogen 66% Fluorine 64% Fluorine Increasing Fluorine Improving B and GBLT-S family Chemical +.

2 GBL-S families 66% Fluorine Resistance 68% Fluorine F and GF-S families GFLT-S family 70% Fluorine 67% Fluorine Most Fluid Resistant viton ExtremeTM. Note: polymers with names VTR-8802/8804, 60% fluorine ending with an S are based on Advanced Polymer Architecture ETP-S, 67% fluorine (APA) technology April 13, 2010 DuPont Confidential Relative Performance of viton . Fluoroelastomer families viton Relative Performance 6. viton product A AL B F GAL-S GBL-S GF-S GLT-S GBLT-S GFLT-S TBR-S ETP-S. Curing system bisphenol bisphenol bisphenol bisphenol peroxide peroxide peroxide peroxide peroxide peroxide bisphenol peroxide Fluorine content 66% 66% 70% 70% 66% 67% 60% 66%. Heat resistance All viton products have outstanding thermal properties Chemical resistance* *. BEST. Base resistance BEST BEST. Low temperature BEST . properties Compression set resistance BEST.

3 Relative cost of low low low low low low low medium medium medium low high polymer BEST Excellent Very good Good Fair Poor S indicates products made with Advanced Polymer Architecture * Consult the Chemical Resistance Guide at or contact your viton specialist. April 13, 2010 DuPont Confidential viton Fluoroelastomers Typical Applications 7. High Highfluorine fluorinefor forbest best Best compression set and processing Chemical resistance Chemical resistance ( ( steamand andacid). acid). 0 Easy Easyprocessing processing Low temperature flexibility -5. low lowfluorine fluorine GF-S ( ( o- -10 ETP-S rings). (F) rings). B. TR-10 ( C). -15 GBL-S A. -20 AL. GAL-S. Broadest GFLT-S. Broadestfluid fluid -25. resistance GBLT-S. resistance -30. ( ( down GLT-S. hole). hole) -35. 0 5 10 15 20 25 30 35. Volume swell upon immersion in M15 / 7 d / room-temperature (%).

4 Best Best High Best fluid resistance low temperature Highfluorine fluorinewith withlow low low temperature temperature functionality performance performance temperature functionality ( ( ( fuelinjector ( fuelsystems). systems) injector o-rings). o-rings). red for viton made with APA ( -S for APA technology);. G for peroxide curing vs. bisphenol curing, LT for low temperature April 13, 2010 DuPont Confidential Vamac . Ethylene Acrylic Elastomer (AEM). General Introduction February 2010. 9. Vamac on the Elastomer's Map Classification by ASTM D-2000. V Solutions Space Heat Sealing & Hose Applications 250. Res. 70 hrs viton . 225. Silicone Applications with 200 min. temperature Fluorosilicone requirements of 165 degrees HiTemp-ACM. 175. Vamac . Polyacrylate (ACM). 165. EPDM. 150. CSM HNBR. CPE. 125 Epichlorohydrin Applications Neoprene with reduced 100 Butyl swell Nitrile NBR/PVC.

5 Styrene Butadiene 70 Natural Rubber No Req 170 120 100 80 60 40 20 10 Oil Resistance % Swell in IRM 903 Oil April 13, 2010 DuPont Confidential 10. Chemical structure AEM G -Type Terpolymer New products (A) Monomers Choice and Ratio (CH2-CH2)x (CH-CH2)y (R)z | | (B) Molecular Weight Distribution Optimization. O=C C=O. | |. OCH3 OH (C) Adjustments at Finishing step. Ethylene, Methyl Acrylate, Acidic Cure Site Starting from Vamac G, new products can be obtained by (A), (B) or (C) to meet customers required performances. April 13, 2010 DuPont Confidential Vamac GRADES 11. Vamac - Grade Selection AEM G -TYPE Terpolymer AEM D -TYPE Dipolymer (CH2-CH2)x (CH -CH2)y (R)z (CH2-CH2)x (CH -CH2)y | | |. C =O C=O C=O. | | |. OCH3 OH OCH3. Diamine Cure Peroxide Cure April 13, 2010 DuPont Confidential 12. Vamac Product Line and Developments Lower oil swell Vamac G Vamac GLS.

6 Higher viscosity Best Low T properties Vamac HVG Vamac Ultra LT. Better properties, Vamac GXF. faster cure Vamac DP VMX-3038 Vamac Ultra IP. (developmental) (VMX-3040). VMX-3121 High (low swell version, Viscosity VMX-3110. experimental) (developmental). Grades Peroxide Cure Best Dynamic Flex Fatigue Best Processing and Compression Set Limited Post-Cure April 13, 2010 DuPont Confidential (Turbo Hoses) Properties 13. Vamac - Standard and High Viscosity Grades High Viscosity Grades Vamac G Vamac GXF Vamac GLS. Standard Grade MU, -30 C MU, -31 C MU, -24 C. ML (1+4) 100 C, Tg High Viscosity Vamac Ultra IP Vamac VMX-3038 Vamac VMX-3110. Grade 29 MU, -31 C 30 MU, -32 C 30 MU, -25 C. ML (1+4) 100 C, Tg Major Features; Best Compression Best Dynamic Best Compression Set, Fast Cure Fatigue Resistance; Set, Fast Cure, Low Oil swell Main Application(s) Low Hardness High Temperature Molded parts with Molded parts, Seals Turbo Charger best fluid and & Gaskets, High Hoses lubricant resistance pressure hoses Vamac VMX-3121.

7 31-33 MU, -26 C. High MA version of April 13, 2010 DuPont Confidential VMX-3038. 14. Vamac Grade Description Polymer Target Grade Features ML 1'+4'(100 C) Performances G Standard Grade GLS Increased MA %for higher polarity Improved Fluid resistance HVG Covalent precrosslink Green strength Diamine cure GXF Modified cross-link density Fatigue resistance Ultra IP Tailored MW distribution Better process Ultra LT New copolymer Low T resistance VMX-3038 Talilored MW and Monomer content Best HT. properties MR Specific Finishing Process Polymer peroxide Modification DP DiPolymer, No acidic cure site +/-3 No post-cure Vamac grades tailored on a target performance to meet customers needs. DuPont Confidential April 13, 2010. On-line Tools Wall Chart for viton , a Selection Guide 16. Molding Others Nominal Volume metal bonding compression Viscosity Polymer Compression Increase, Calendering.

8 viton Coatings /. Extrusion (ML 1 + fluorine set, % Temperature CM-15. Injection Transfer Mastics Product 10 @ Specific content, 70 hr @ Retraction Fuel Name 121 C) Gravity % 200 C (TR-10), C 23 C. A and AL types: Standard FKM - excellent compression set and heat resistance Curative Containing Precompounds ("C" at end of product name). A331C 30 66 20 -17 30% X X X X X. A361C 30 66 17 -17 30% X X X X X X. VTR-9180 30 66 18 -17 30% X X X X. A401C 40 66 15 -17 30% X X X X. A601C 60 66 10 -17 30% X X X X. VTR-9192 32 66 25 -19 32% X X X. Gum Polymers (2). A100 10 66 21 -17 30% X X X X X. (2). A200 20 66 16 -17 30% X X X X X X. (2). A500 50 66 14 -17 30% X X X X X. (2). A700 70 66 11 -17 30% X X X X X. (1) (2). AHV 160 66 10 -17 30% X X X. (2). AL300 30 66 15 -19 32% X X X X X X. AL600 60 66 -19 32% X X X X X X. Product name Comp set & TR-10. Processing info Mooney viscosity Vol.

9 Swell, M-15. Specific gravity & % fluorine April 13, 2010. viton wall chart is available at DuPont Confidential Selection Based on Application Needs 17. Base Base resistance: resistance: Best Best resistance resistance to to aggressive aggressive amine amine based based anti-corrosion anti-corrosion additives additives ?? yes no Hydrocarbon Hydrocarbon resistance resistance High High resistance resistance to to oxygenated-fuels oxygenated-fuels (automotive (automotive fuels, fuels, etc.)? etc.)? (MeOH, (MeOH, MTBE), MTBE), steam, steam, acids? acids? yes no yes no Low Low temperature temperature Low Low temperature temperature ETP-S TBR-S flexibility flexibility better better flexibility flexibility better better than than -20 . -20 C? C? than than -20 . -20 C? C? GFLT-S. yes no yes no F A B. GFLT-S GLT-S. AL. GBLT-S GF-S GBL-S. April 13, 2010 DuPont Confidential black for standard viton ; red for viton made with APA ( -S for APA technology).

10 On-line viton Selection Guide 18. April 13, 2010 DuPont Confidential On-line Chemical Resistance Guide 19. The CRG is a resource to help you choose the best elastomer for your application. Access to our on-line Chemical Resistance Guide (CRG) is available through the DuPont Performance Elastomers web site at ,where detailed information about our product line may also be found. April 13, 2010 DuPont Confidential Example 1: Water and Steam 20. Water Steam under 150 C Steam over 150 C. April 13, 2010 DuPont Confidential Example 2: Fuel C/Methanol (90%/10%) 21. April 13, 2010 DuPont Confidential 22. On-line Application Guide for viton Made With APA. April 13, 2010 DuPont Confidential 23. On-line Application Guide for viton Made With APA. April 13, 2010 DuPont Confidential 24. Thank you for your attention 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.