Menu (ESC)

Epichlorohydrin Copolymer Rubber (ECO)

ECO rubber is a thermoset elastomer or rubber material. It has a moderately high ductility among the rubber materials in the database. The graph bars on the material properties cards below compare ECO rubber to other rubber materials (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Compressive (Crushing) Strength

21 MPa 3.0 x 103 psi

Elastic (Young's, Tensile) Modulus

0.0075 GPa 0.0011 x 106 psi

Elongation at Break

440 %

Poisson's Ratio


Shear Modulus

2.5 GPa 0.36 x 106 psi

Tensile Strength: Ultimate (UTS)

16 MPa 2.3 x 103 psi

Other Material Properties


1.5 g/cm3 91 lb/ft3

Maximum Temperature: Mechanical

130 °C 260 °F

Thermal Expansion

650 µm/m-K

Common Calculations

Stiffness to Weight: Axial

0.0029 points

Stiffness to Weight: Bending

4.5 points

Strength to Weight: Axial

3.0 points

Strength to Weight: Bending

9.5 points

Followup Questions

Further Reading

Rubber Formulary, The, Peter A. Ciullo and Norman Hewitt, 1999