Viton™ GF-600S* is a next generation, easy processing,  peroxide-cured 70% fluorine fluoroelastomer based  on new Advanced Polymer Architecture (APA).  Viton™ GF-600S exhibits improved processability  coupled with similar or improved fluids resistance in  aromatic hydrocarbons, alcohols, methanol, water, steam,  and acids. 

Features 

• Cures exceptionally fast to a high state of cure 

• Exhibits improved mold flow, less shear sensitivity, and  lower extruder die swell for a ~65 Mooney FKM 

• Exhibits excellent physical properties with high  elongation, both original and aged  

• Exhibits excellent compression set resistance with  short (2 hr) or no post-cure  

Processing 

A load factor of >70% for internal mixing of Viton™ GF-600S is recommended. The recommended process  aids for Viton™ GF-600S are 1 phr of Struktol® HT 290  or combinations of 0.5 phr Armeen® 18D with carnauba  wax or Struktol® WS 280. Viton™ Curative No. 7 (VC-7)  coagent is recommended for all Viton™ GF-600S  compounds. Use at a 2.5 phr level or less is generally  satisfactory, unless high modulus is needed. At higher  levels, VC-7 can bleed out and cause molding flaws.