Chemraz® SD517 is a white, high-purity, synthetic,  fluorinated rubber with comparable chemical compatibility  to polytetrafluoroethylene (PTFE). Chemraz® SD517 is a  choice material for high-performance seals and custom  flexible shapes in pharma, biotech, and food applications  with comprehensive compliance.  

In applications where EPDM, silicone, or FKM seals are  unsuitable or require multiple replacement each year,  Chemraz® SD517 can dramatically improve process  reliability and safety.

Compliance & Quality 

Parts made from Chemraz® SD517 offer compliance  for pharma, biotech, and food industries: 

• Animal-Derived, Ingredient Free (ADI Free) 

• FDA Food Contact Number (FCN) 247 

• FDA 21 CFR 177.2400 (d), Extractive Limitations for  Perfluorocarbon-Cured Elastomers

• USP <87> and <88> Class VI Biological Reactivity  Tests 

• 3-A 18-03, Product Contact Surfaces in Dairy Equipment,  Sections C & D for Class I Rubber Material 

Upon request, we can advise on Chemraz® SD517  compliance to other standards. When required, our  experienced staff of rubber formulation experts can  develop Chemraz® for additional compliance and  performance requirements.  

Greene Tweed manufactures parts from Chemraz® SD517  in a fully traceable ISO 9001:2015 quality management  system (QMS), using validated, documented processes.  All Chemraz® SD517 parts are prepared, washed, and  packaged in an ISO 7 cleanroom or better.