TECNOFLON® FOR 421/U is a low viscosity cure incorporated fluoroelastomer copolymer. This grade is well suited for applications where superior flow, mold release, and excellent compression set are required. Tecnoflon® FOR 421/U can be compounded to meet the major fluoroelastomer specifications. Some of the basic properties of Tecnoflon® FOR 421/U are: - Very fast cure rate - Very good scorch safety - Superior mold flow - Excellent mold release - Lack of mold fouling - Excellent compression set - Good extrusion TECNOFLON® FOR 421/U can be used for injection and transfer moulding of O-rings, gaskets, and seals. The product can be mixed using typical fluoroelastomers compounding ingredients and mixing can be accomplished with two-roll mills or internal mixers. The material can be extruded into hoses or profiles and can be calendered to make sheet stocks or belting. Finished goods can be produced by a variety of rubber processing methods.


  • Global Business Unit
    Specialty Polymers
  • Brand
  • Synonyms


Segments Applications
Chemical Industry Chemical Engineering
Industrial Equipment Industrial Equipment Parts | Pipes, Pumps, Fittings & Valves
Segments Applications
Powertrain Efficiency Engine Management Systems | Oil & Fuel Circuit
Lightweighting Mechanical Components
Segments Applications
High Speed Train Powertrain efficiency

Chemical categories

Chemical category Chemical family Chemical product
Specialty Polymers Fluorinated Elastomers Fluoroelastomer

Region of commercial availability

  • Europe / Middle East / Africa
  • North America
Not available in Middle East/Africa

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