Urethane Casting Materials

Opaque Elastomer

At a glance


Urethane Casting

Lead Time

10 days


All colors; precise pantone color matching available


Shore A 20, 30, 40, 50, 60, 70, 80, 90




Wearables, gaskets, overmolds

About the Material

Opaque Elastomer is a polyurethane plastic that simulates all kinds of rubber-like materials such as TPE, TPU, and silicone rubber. This material is great for wearables, gaskets, and overmolds and is available from Shore 20A to Shore 90A in 10A increments.

Material Properties


Shore A 20, 30, 40, 50, 60, 70, 80, 90

Elongation at Break


Design Recommendations

Min Wall Thickness

1.5 mm for guaranteed parts
1.0 mm minimum

Rib Dimensions

Thickness: < 60% nominal wall thickness.
Height: < 3x thickness

Min Boss Dimensions (height, diameter)

1 x 1 mm
0.039 x 0.039 in


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