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Visit Zeus Inc. for Fluoropolymer Tubing
DuPont Mobility and Materials VTR 8650 (GBL-S) Peroxide Cured Fluoroelastomer (FKM) Formulation
Categories: Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer; Rubber or Thermoset Elastomer (TSE)

Material Notes: VTR-8650 is a 68% fluorine peroxide cured polymer similar to Viton® GBL-900 but with significantly improved processing and curing characteristics. VTR-8650 utilizes Advanced Polymer Architecture technology which includes a new peroxide cure site along with an optimized molecular weight distribution designed to deliver a polymer which:
  • Cures exceptionally fast to a high state of cure
  • Shows improved mold release/mold fouling properties compared to Viton® GBL-900 and 200
  • Shows improved mold flow, less shear sensitivity, and lower extruder die swell for a ~65 Mooney FKM
  • Shows excellent physical properties with high elongation, both original and aged
  • Shows similar heat, fluids, and low temperature resistance compared to Viton® GBL-900 and 200
  • Shows improved water resistance/volume swell in water compared to Viton® GBL-900 and 200
  • Shows excellent compression set resistance with either low or no postcure

It is recommended if mixing in an internal mixer to use at least a 70% load factor. The recommended process aid for VTR-8650 is 0.5 phr of Armeen® 18D.

Information provided by manufacturer.

DuPont and Dow have completed their merger but further transactions/spinoffs are planned.

Vendors:
Available Properties
  • Mooney Viscosity, ML-10 (gum)
  • Hardness, Shore A, Cured 7 min at 177°C and Post Cured 2 hr at 232°C
  • Tensile Strength, Ultimate, Cured 7 min at 177°C and Post Cured 2 hr at 232°C
  • Tensile Strength, Yield, 10% Modulus, Cured 7 min at 177°C and Post Cured 2 hr at 232°C
  • Elongation at Break, Cured 7 min at 177°C and Post Cured 2 hr at 232°C
  • 100% Modulus, Cured 7 min at 177°C and Post Cured 2 hr at 232°C
  • Compression Set, Method B, O-rings 22 hr at 200°C (Post Cured 2 hr at 232°C)
  • Glass Transition Temp, Tg, DSC, modulated, midpoint
  • Fluorine, F
  
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Manufacturer Notes:
DuPont Performance Polymers (Former DuPont Elastomers)

Category Notes
Plastic

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Visit Zeus Inc. for Fluoropolymer Tubing
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