No special storage precautions noted. Material is stable under normal conditions. Avoid contact with oxidizing agents. For further information, refer to Section 10: "Stability and Reactivity". Use container made of: Suitable plastic material.Please consult the Safety Data Sheet of this product.


​Bluesil HCR 970 U is silicone master batch compound, vulcanising on heating after addition of a vulcanizing agent (chosen according to the transformation process).

Heat Protection;High Temperature Protection

HCR Masterbatch


  • Slight refreshening after prolonged storage
  • Easy to process
  • No post curing or slight post curing
  • Good heat stability, up to 225ºC, 250ºC using additive 744

Bluesil HCR 970 U is recommended for moulding, injecting and extruding articles with good mechanical properties (in particular a low compression set, high resiliency and remarkably low tack).

Asia Pacific

For information about Storage and Shelf Life for this product, please download the Technical Data Sheet.




Hardness70MonocompASTM D 2240sh.A
Elongation450MonocompNF ISO 37%
Density1.17MonocompISO 2781g/cm3
Tear strength20MonocompASTM D 624AN/mm
Tensile strength8.5MonocompNF ISO 37MPa











































All rights reserved © Elkem Silicones 2018