> Dynalast

Dynalast® FFKM is one of the latest developments in the field of perfluoroelastomers.

Dynalast® FFKM combines the elasticity of fluoroelastomers (FKM) with the chemical resistance of polytetrafluoroethylene (PTFE), providing real solutions to the most demanding sealing problems.

The base monomers of Dynalast® FFKM are very expensive and the manufacturing processes very complex, meaning very high production costs, beyond comparison with other elastomers.

WHY CHOOSE DYNALAST® OVER OTHER PERFLUOROELASTOMERS ?

• Because of the different grades of materials offering optimal performance for a range of applications:
  • Specific formulations,
  • Variable curing processes,
  • Wide range of colours (upon request),
  • Hardness range: 60 - 90 Shore A.
• Because of the wide range of possible shapes and sizes:
  • O-Rings,
  • Plates,
  • Balls,
  • Membranes,
  • Specific seals,
  • Rubber/ metal composites.
• Because of quick delivery.
• Because of its excellent value for money.

ADVANTAGES OF DYNALAST® FFKM

As well as having similar elasticity to other elastomers, Dynalast® offers the following advantages :

• More or less identical chemical resistance to PTFE, ie: far higher than that of fluoroelastomers (FKM),
• Maximum temperature : 290°C for continuous operation with a peak temperature of 310°C, (The table compares the temperature resistances of the different materials.)
• Excellent resistance to atmospheric agents and ozone,
• Optimal seal with vacuum and high vacuum, even in the presence of high temperatures.

These advantages guarantee the Dynalast® FFKM user reduced maintenance costs and minimise operating losses.

APPLICATIONS

• Chemistry :
  Dynalast® resists almost all chemical reagents, solvents, ethers, ketones, amines, oxidatives, carburants, acids, bases, etc…
  Dynalast® FFKM resists high-temperature steam containing corrosion inhibitors (eg : amines).
  
• Petrochemicals, oil and gas production :
  aniline, sulphuric acid, sodium hydroxide, diethanolamine, diethyl formamide, octane, etc…
  
• Pharmaceuticals and cosmetics :
  amines, acetic acid, nitric acid, aniline, toluene, etc…
  
• Dyes and paints :
  ethyl acetate, acetone, methyl ethyl ketone, diethylene dioxide, etc…
  
• The semiconductor industry :
  Only Dynalast® FFKM can meet the critical tightness requirements of this industrial sector : high temperatures, high pressures, chemical corrosion, efficient operation where gases are used, contamination prevention : plasma, acids, bases, solvents, ultrapure deionized water, etc…
  
• Phytosanitary products industry :
  xylene, aniline, acetic acid, sulphuric acid, nitric acid, ammonium hydroxide, etc…
  
• Photographic industry :
  amyl acetate, acetic acid, etc…
  
• Detergent industry :
  benzene, ethyl benzene, sodium hydroxide, etc…
  
• Plastic industry :
  amines, aniline, ethyl acetate, ammonium hydroxide, benzene, methylene chloride, styrene, dimethylformamide, etc…