Viton™ B - 68% Fluorine
Better–Chemical Resistance

Acid Resistant Viton®
Viton™ B has better resistance and retains flexibility better after dry heat aging than Viton™ A. It is recommended for applications requiring maximum retention of elastic properties combined with good mechanical properties. Viton™ B is specified by the FSA to resist sulfur dioxide in power generating factory systems.

Chemical Resistance
Viton™ B offers superior resistance to both diluted and concentrated aggressive acids. Thermodyn's exclusive B compound TH-6070-B* made of Viton™ is resistant to various mineral acids including:
  • Sulfuric Acid
  • Nitric Acid
  • Hydrochloric Acid
  • TH-6070-B* is one of the few B compounds that meet DuPont™ chemical's rigorous engineering specifications for use in DuPont™ plants.
  • U2A S24/G24, S23/G23

General Properties
  • Hardness Durometer, ASTM D1414, IRHD: 75±5
  • Tensile Strength, ASTM D412 minimum: 1400psi
  • Elongation ASTM D412 minimum: 175%
  • Temperature Range: -18°C to 220°C (450°F)
  • Compression Set, ASTM D395B plied: 30% maximum Discs. 22hr @ 200°C (392°F)
  • Fluid Resistance, ASTM D471 immersed: 20% maximum volume swell in Toluene at 20°C (68°F) for 70 hours

Additional Products made with Viton™ B
  • Sheeting
  • Molded Parts
  • Diaphragm Sheeting
  • Flue Duct Expansion Joints
  • Extrusions
  • Caulk, Coating and Adhesive

TH-6070-B is resistant to many fluids. Please consult Thermodyn™ if you are unsure which type of Viton™ will offer optimum sealing and fluid resistance.