DuPont Elastomers VTR 8650 (GBL-S) Peroxide Cured Fluoroelastomer (FKM) Formulation

Subcategory: Fluoropolymer, TS; Elastomer, TS; Thermoset

Close Analogs: This former DuPont Dow Elastomers product line is now produced by DuPont Performance Elastomers.

Material Notes:

Formulation

VTR 8650	100
Zinc Oxide	3
N990 Carbon Black	30
Diak™ 7 (TAIC)	3
Luperox® 101-XL peroxide	3

Description: VTR-8650 is a new, developmental 68% fluorine peroxide cured polymer similar to Viton® GBL-900 but with significantly improved processing and curing characteristics. VTR-8650 utilizes a revolutionary new 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.