Simriz® Perfluoroelastomer

Simriz<sup>®</sup> Perfluoroelastomer

With Simriz® Perfluorelastomers, Freudenberg Process Seals offers the processing industry the High-End solution in materials technology for sophisticated applications regarding media and temperature stability.

Simriz® features wide chemical stability, similar to that of PTFE, combined with the rubbery properties of an elastomer. Specially for the processing industry, Simriz® makes a complete product range of high class FFKM material available which set new standards regarding operational safety and durability. Apart from the Simriz® compounds for standard and high temperature applications, FDA and USP Class VI compliant versions are available which are optimally designed for use in food and beverage and pharmaceutical production.

General properties:

  • Universal stability like PTFE with the elastic advantages of an elastomer
  • High reliability for static and dynamic applications
  • Extremely high stability in aggressive media
  • Highly stable when used in polar and non-polar media, even at high concentration and temperature
  • Temperature range from -10 °C to +325 °C (Special types)
  • Reliable properties even with frequent temperature changes
Characteristics of different Simriz compounds:
  • 70 Simriz 491    excellent chemical resistance / molded parts / black 
  • 75 Simriz 495    excellent chemical resistance / o-rings / black
  • 75 Simriz 494    FDA compliant and USP Class VI / black
  • 75 Simriz 506    FDA compliant and USP Class VI / white
  • 75 Simriz 497    high temperature compound / black

Suitable applications for Simriz®

  • Water and water steam
  • Conc. acids (e.g. nitric acid 60%)
  • Amines (e.g. Ethylene diamine)
  • Organic acids (e.g. acetic acid)
  • Ketones (e.g. methyl ethyl ketone)
  • Alkaline solutions (e.g. sodium hydroxide, potassium hydroxide)
  • Organic solvents (e.g. methanol)
  • Implementation of requirements made of Hygienic Design
Technical Specification
Material Perfluorelastomer, FFKM
Color black
Hardness Shore A (DIN 53505) 75 ± 5 (Test panel)
Hardness IRHD (DIN ISO 48 M) 2,02 g/cm3
Modulus at 100% elongation (DIN 53504) 8,6 N/mm2
Tensile strength (DIN53504) 22,1 N/mm2
Elongation at break (DIN 53504) 165%
Compression set (70 h, 200 °C, 25 %) (DIN ISO 815) 33%
Temperature resistance –10 °C to +230 °C (briefly up to 260 °C); Special types up to +325 °C

Approvals & Licenses

  • FDA conformity (CFR 21 Part 177.2600)
  • Animal derived ingredients free (ADI free®)
  • USP Plastic Class VI at 121 °C
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