DuPont Mobility and Materials VTR 8525 (GBLT-S) GLT 505 Formulation

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DuPont Mobility and Materials VTR 8525 (GBLT-S) GLT 505 Formulation (discontinued **)
Categories:	Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer; Rubber or Thermoset Elastomer (TSE)
Material Notes:	VTR-8525 is a 66% fluorine peroxide cured polymer that utilizes DuPont Dow's Advanced Polymer Architecture technology to create a seal offering for fuel systems. VTR-8525, which will become Viton® GBLT-S once it is fully commercial, has the following attributes: VTR-8525 is a one polymer alternative to GLT and GFLT for fuel seals and fuel injector O-rings Better low temperature sealing than GFLT...–40°C and below Better fuel/alcohol/methanol resistance than GLT Current GFLT and GLT auto specs could be combined into one specification VTR-8525 derives additional benefits from new Advanced Polymer Architecture technology Physical modulus is low, elongation is high - parts are easier to stretch, more tear resistant in automated assembly equipment Cures exceptionally fast to a high state of cure Shows improved mold release/mold fouling properties compared to GLT and GFLT Shows excellent compression set resistance with little (2 hr at 232°C) or no postcure It is recommended to use at least 70% load factor in an internal mixer. The recommended process aid for VTR-8525 is 0.5 phr of Armeen® 18D. A two part process aid system of Armeen® 18D with Strucktol WS 280 at 0.8 phr each is optimal if that level of process aid can be tolerated in mold shrinkage. The use of Diak™ #8 is NOT recommended as it causes poor mold release and high compression set. Information provided by manufacturer.
Vendors:

Available Properties

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
Fluorine, F

Property Data

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Manufacturer Notes:
DuPont Performance Polymers (Former DuPont Elastomers)

Category Notes
Plastic

**
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