氟橡胶GF-205NP

Chemours Viton® GF-205NP Fluoroelastomer (FKM)
Material Notes:  Gum polymer (curative not incorporated). Good physical properties without oven postcure

Temperature of Retraction (TR-10): -10°C. Polymer Fluorine Content: 69%. Volume Increase After 7 Days/Methanol/23°C: 10 to 20%

Applications: Transfer, compression molded goods requiring excellent fluid resistance.

Viton Type F Information: Comprised of vinylidene fluoride (VF2), hexafluoroproylene (HFP) and tetrafluoroethylene (TFE). Highest fluorine content of Viton standard grades leads to highest chemical resistance and lowest flexibility at low temperatures.

Physical Properties Metric English Comments
Density  1.89 g/cc 0.0683 lb/in³ 
Mooney Viscosity  20
@Temperature 121 °C 20
@Temperature 250 °F Nominal Viscosity, ML 1+10
 
Mechanical Properties Metric English Comments
Compression Set  30 %
@Temperature 200 °C 30 %
@Temperature 392 °F 70 hours
 
Thermal Properties Metric English Comments
Maximum Service Temperature, Air  204 °C 399 °F Continuous use
  >= 260 °C >= 500 °F Intermittent use
Minimum Service Temperature, Air  -23.0 - -18.0 °C -9.40 - -0.400 °F Viton is generally useful down to -18 to -23°C.