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  5. 3M™ Dynamar™ Rubber Curative FX 5166

3M™ Dynamar™ Rubber Curative FX 5166

3M Product Number FX 5166
  • Functions as a cure accelerator for fluoroelastomers (FKM) and ECO
  • Used as part of a cure system for vulcanizing polyepichlorohydrin elastomers
  • Delivered in pellet form
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Weight (Imperial)
Container Volume
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Available options:
 Weight (Imperial) and Container Volume
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Attribute Name
Color Family
40% active cure accelerator on FKM Carrier
Container Type
Box, Box Gallon, Drum
Container Volume
100 g, 14 Gallon, 22 kg, 48 lb.
Cure Technology
312 %
CPI/Semicon, Defense, Electrical, Mining, Oil and Gas, Rubber and Plastic, Transportation
Median Particle Size
Net Weight (Imperial)
0.22 lb, 25 lb, 48 lb
Net Weight (Metric)
100 g, 11.3 kg, 21.7 kg
Product Color
Product Form
Free Flowing Powder
Product Type
Rubber Curative
Shelf Life
2 Year
Tensile Strength at Break
12.73 MPa (1,848 psi)
Weight (Imperial)
14 Gallon, 3.5 Ounce, 48 lb., 48.5 lb.
Weight (Metric)
100 g, 21.77 kg, 22 kg, 53 Liter
  • Functions as a cure accelerator for fluoroelastomers (FKM) and ECO
  • Used as part of a cure system for vulcanizing polyepichlorohydrin elastomers
  • Delivered in pellet form

3M™ Dynamar™ Rubber Curative FX 5166 is a cure accelerator used as part of a system – along with 3M™ Dynamar™ FC 5157E and RC 5251Q – specifically for vulcanizing polyepichlorohydrin elastomers. This cure system is used in veneer fuel and filler hose constructions.

Ideal for Veneer Fuel and Filler Hoses
Polyepichlorohydrin compounds cured with 3M™ Dynamar™ Rubber Curatives are capable of bonding directly to incorporated cure 3M™ Dyneon™ Fluoroelastomers and 3M™ Dyneon™ THV Fluorothermoplastics without the use of bonding agents. Nitrile compounds containing Dynamar rubber curative FX 5166 also demonstrate the same characteristics. This is particularly useful in veneer hose constructions.

The recommended concentration of Dynamar rubber curative FX 5166 is 0.5-2.0 phr. It can be added at any point during the mixing cycle, however best results are usually obtained when incorporated early in the mix – preferably to the gum directly after polymer breakdown.

Delivering Custom Solutions
3M offers over 50 grades of fluoroelastomers with varying monomer composition, Mooney viscosity and fluorine content. This broad offering, combined with our expertise in application and product development, translates into greater design flexibility.

For decades, we have been able to supply unique solutions to meet the increasing market challenges in developing and producing state-of-the-art fluoroelastomer products at the highest quality level. This goes hand-in-hand with our unparalleled commitment to research and customer support. Like all of our products, 3M™ Dynamar™ Rubber Curative FX 5166 is backed by skilled researchers at several 3M tech service laboratories. Collectively, our staff has decades of experience researching, developing and improving upon fluoroelastomers. Toward that end, we are in regular communication with customers who deliver feedback – allowing us to improve existing products and deliver custom solutions. All of this is part of an unrelenting drive to deliver top products to our customers. From coatings to calendered sheets, tubing to molded goods, 3M has a solution for your specialty application.

Cure System Helps Provide the Following in Compounds:

  • Excellent scorch resistance
  • Significant rheological flexibility
  • Good heat aging
  • Good compression set resistance