Vamac® G

About
DuPont™ Vamac® G is a terpolymer of ethylene, methylacrylate, and a cure site monomer. It is cured using an amine-based vulcanization system. This gum elastomer includes a small amount of processing aid, and has a nominal specific gravity of 1.03. It has a mild acrylic odor. Use adequate ventilation during storage, mixing, and processing to prevent accumulation of residual vapors. Storage stability is excellent. Vamac® G has excellent high-temperature durability and oil resistance with service lubricants, coupled with good low-temperature flexibility. Compounds of Vamac® G are typically rated at 175°C (347°F) for heat resistance, with oil swell values around 50% in IRM 903 oil. The properties of Vamac® G make it well suited for a wide range of automotive applications, including powertrain seals and gaskets, rocker cover and piston seals, oil coolant hoses, power steering hoses, turbocharger hoses, crankcase ventilating tubes, coverings for fuel and coolant hoses, O-rings, grommets and spark plug boots. Vamac® G is an excellent vibration damping material that is uniquely insensitive to temperature over a range of -30°C (-22°F) to 160°C (320°F). Compounds of Vamac® G are suitable for use in torsional dampers and isolator pads. Vamac® G is a halogen-free polymer and does not decompose to give off corrosive gasses when exposed to flame. It is used for flame-retarded, low-smoke, nonhalogen wire and cable jackets and in nonhalogen, low-smoke flooring. Vamac® G is well suited for injection, transfer and compression molding, and is easily extruded.&&

Product Description
SupplierDuPont
GenericAEM
Material StatusCommercial: Active
FeaturesNo viscosity,Low smoke,noise reduction,Halogen free,Flame Characteristics,Low toxicity,High Heat Resistance,Low temperature toughness,Durability,Grease resistance
AvailabilitysNorth America,Europe
Process MethodsInjection Molding

Technical Data
PHYSICALNominal valueUnitTest method
Mooney viscosity ASTM D1646
ML 1+4,100℃17 to 40MUASTM D1646
MS 1,121℃> 16MUASTM D1646

MECHANICALNominal valueUnitTest method
Shore hardness ASTM D2240
Shaw’s A68 ASTM D2240
Shaw’s A77 ASTM D2240
Shaw’s A66 ASTM D2240
Shaw’s A48 ASTM D2240
Shaw’s A58 ASTM D2240
Shaw’s A57 ASTM D2240

elastic bodyNominal valueUnitTest method
tensile strength 
100% strain5.10MPaASTM D412
100% strain6.40MPaASTM D412
100% strain4.70MPaASTM D412
100% strain4.80MPaASTM D412
100% strain5.20MPaASTM D412
tensile strength ASTM D412
yield16.6MPaASTM D412
yield15.3MPaASTM D412
yield14.1MPaASTM D412
yield8.80MPaASTM D412
yield11.3MPaASTM D412
yield13.8MPaASTM D412
Tensile strain ASTM D412
fracture280%ASTM D412
fracture230%ASTM D412
fracture300%ASTM D412
fracture190%ASTM D412
fracture150%ASTM D412
fracture220%ASTM D412
Compression deformation ASTM D395
150℃,70 hr16%ASTM D395
150℃,168 hr21%ASTM D395
150℃,336 hr26%ASTM D395
150℃,504 hr30%ASTM D395
150℃,1008 hr40%ASTM D395
177℃,168 hr24%ASTM D395

Aging performanceNominal valueUnitTest method
Volume change ASTM D471
150 ℃, 70 hr, ASTM standard oil (No.1)9.0%ASTM D471
150 ℃, 70 hr, in IRM 903 oil60%ASTM D471
150℃,1008 hr,Dexron® III ATF28%ASTM D471
150 ℃, 1008 hr, in SF105 oil32%ASTM D471

THERMALNominal valueUnitTest method
Embrittlement temperature ASTM D3418
-32.6ASTM D3418
-27.9ASTM D3418

Supplementary informationNominal valueUnitTest method
Mooney Scorch(Time to 10unit rise,121℃)13.0minASTM D1646
volatility< 0.4wt%Internal Method

Notes
1. Typical properties: these are not to be construed as specifications.
2. Aged 70 Hrs at 150°C (302°F) Immersed in IRM 903
3. Aged 1008 Hrs at 150°C (302°F) Immersed in SF-105 Oil
4. Aged 1008 Hrs at 150°C (302°F) Immersed in GM Dexron® III ATF
5. Aged 1008 Hrs at 150°C (302°F) in Air
6. Aged 70 Hrs at 150°C (302°F) Immersed in ASTM #1 Oil
7. Initial
8. Inflection
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