What is custom fluoroelastomer mixing?

Custom Fluoroelastomer MixingCustom fluoroelastomer mixing can be described very simply. Fluoroelastomers are polymers that can withstand severe conditions and environments – including chemicals and extreme heat.

Our relationships with the major FKM suppliers and their technical departments (Chemours®, 3M-Dyneon®, AGC Chemical-Aflas®, Solvay Solexis-Tecnoflon®, Lianda®) ensures we are kept up to date with new developments.

Experience in Custom Fluoroelastomer Mixing

Since 1983, we’ve been custom mixing fluoroelastomers to suit a majority of applications. In that time, Rainbow Master Mixing has developed a vast library of fluoroelastomer compounds. We have formulations for a variety of applications including, but not limited to:

  • Low/no post cure
  • Low cost
  • Compounds for compression/transfer/injection molding
  • Compounds for extrusions
  • Compounds for calendaring
  • Colored compounds
  • Chemical resistance
  • Military/aerospace (MIL-AMS)
  • Food/Beverage/Pharmaceutical
  • Metal Bonding/fabric Adhesion
  • Dupont gasket code compounds
  • Oil/Gas
  • Automotive/truck/rail
  • Base resistance compounds-Viton® ETP-S/Aflas®
  • Perfluoroelastomers

Rainbow Mixed Compounds

Rainbow Master Mixing has built a history of supplying quality based fluoroelastomer compounds to our customers for a variety of applications.


Our compounds range from general purpose fluoroelastomers to ones that provide exceptional heat and chemical resistance.

Color Options

Your color options include black, white, brown, green, blue, red, and orange.

Durometer Range

Durometer Range from 50 to 95 Shore A.


We supply our mixed compounds in either slab or strip form.

We will work with our customers to develop formulations to meet their needs. Additionally, Rainbow Master Mixing, LLC is a Dupont elastomers Genuine Viton® licensed manufacturer.

Supplying quality mixed fluoroelastomer compounds to customers worldwide.

With a fluoroelastomer compound library like ours, there's no industry we can't serve with quality product.

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