BLUESIL MF 620 U may be stored at a temperature below 40°C / 104°F for up to 18 months from its date of manufacturing.Please consult the Safety Data Sheet of this product.


BLUESIL MF 620 U is a silicone master-batch vulcanizing on heating after addition of a vulcanization agent (chosen according to the transformation process).

Chemical Protection;Heat Protection;High Temperature Protection;Protection;Sealing

HCR Masterbatch

· Easy processing.
· No post cure or with slight post cure.
· Good heat stability up to 200°C.
· Wide possibility of blending with master batches from the "Mix and Fix" range.
· Bright colours easily obtained colour bases.


  • Producing articles with low compression set and high rebound resilience.
  • ?Use in blends with MASTER BATCHES of greater hardness.


Asia Pacific;Europe Middle East Africa;Central and South America;North America




Density1.06MonocompISO 2781g/cm3
Elongation895MonocompNF ISO 37%
Hardness19MonocompASTM D 2240sh.A
Tensile strength4.8MonocompNF ISO 37MPa
Compression set28MonocompNF T 76102%
Compression set23Monocomp%




































Rubber General Guide General Guide