Elastomer Characteristics

Latex and Natural Rubber

Provides excellent electrical, impact, abrasion, and tear resistance. Typical properties are 38 Durometer shore "A", 800% elongation, 4000 psi tensile strength.


This rubber provides excellent abrasion and oxidation resistance, and good oil, electrical, flame, impact, tear, and weather resistance. Typical properties are 50 Durometer shore "A", 4-500% elongation, 2600 psi tensile strength.


Provides excellent weather, oxidation, and ozone resistance; also provides good electrical resistance.


This lightweight, smooth-finish material has the unique ability to be softer than a rubber band, or harder than a table top. It resists abrasion, breakage on impact, tearing, water, oxidation, ozone, and many solvents. Compared to other elastomers, polyurethane has better cut, tear, and abrasion resistance. Compared to plastics, it is non-brittle, and has the unique ability to return to its original shape. It is extremely stable when exposed to temperature changes, but it is not recommended for prolonged contact with steam.

Typical properties of polyurethane

Duromteter Shore A Trexler Color Tensile, psi
Elongation ASTM
Tear split-pi
Tear Die-C
Tear Die B Shrinkage Linear
30 red 2700 500 40 1.5%
50 yellow 4000 500 40 200 1.5%
65 blue 1250 320 40 130 40 0.0040
80 red 2600 300 40 40 0.0050