Viton^® fluoroelastomers from DuPont Performance Elastomers are available from R.T. Vanderbilt in the U.S. and Canada, except for the U.S. West Coast.

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          Viton^® B-202 Sheet
Viton^® B-202 Sheet is a low viscosity, B-type gum polymer that demonstrates improved processing and rheology when compared with existing fluoroelastomers. Viton^® B-202 is designed to be cured with either Viton^® Curative #30 or Viton^® Curative #50. When using Viton^® Curative #30, use Viton^® Curative #20 in a ratio of about 1.8 Viton^® Curative #30 to Viton^® Curative #20. When using Viton^® Curative #50, use 0.3 - 0.5 phr or Viton^® Curative #20 to ensure a fast cure rate. Note that Viton^® Curatiave #20 can be difficult to mix into low viscosity stocks, such as those based on Viton^® B-202, and careful attention needs to be paid to mixing procedures.

Compared with other B-family terpolymers, Viton^® B-202 provides: Low viscosity, improved processing, increased mold flow and excellent mold release.

Applications: Transfer and injection molding of complex shapes, extrusions (e.g., fuel hose and tubing), solution coatings of fabrics, tanks or chemical containers Viton^® B-202 can be blended with other Viton^® types to modify viscosity, enhance processibility and/or improve flow.

          Viton^® B-600 Sheet
Viton^® B-600 is a gum polymer that demonstrates improved terpolymer processing and lower compound viscosity, along with the excellent heat and fluid resistance characteristics of the "B-family" or Viton^®. Viton^® B-600 is especially suited to curing with the bisphenol system: Viton^® Curative No. 20 and No. 30 or Viton^® Curative No. 50.

Compared to Viton^® B, Viton^® B-600 provides: Improved compression molding with increased mold flow and easier mold release, improved extrusion and calendering, increased cure rate and improved compression set resistance.

Applications: Viton^® B-600 is highly recommended for applications like: Molded goods, e.g., shaft seals and calendered goods, e.g., flue duct expansion joints.

Viton^® is a registered trademark of DuPont Performance Elastomers