Urethane Material Properties & Specs

Material families

Three systems. Many formulations.

Each system is tuned to a process and an application envelope. Custom compounds start from one of these three.

CUC-IS series

Integral skin

Self-skinning polyurethane for ergonomic, visible, and user-contact parts. Skin Shore A 45–85, overall density 25–45 PCF.

CUC-FF series

Flexible foam

Open-cell molded polyurethane foam for cushioning, seating, and impact. Density 6–16 lbs./cu.ft., Shore A 30–60, free-rise density 12–30 PCF, IFD 20–120 lbf. Color options available.

CUC-RIM series

Solid & microcellular RIM

Reaction-injection-molded polyurethane for tight-tolerance parts. Shore A 60–85 solid, or cellular cores at 30–55 PCF.

CUC-SPEC series

Specialty compounds

Aliphatic non-yellowing, UL 94 HB/V-0 fire-rated, and chemical-resistant variants on request.

Property ranges

What the numbers look like.

Typical properties across our integral-skin (CUC-IS) family. Flexible-foam and RIM property sheets available on request.

Integral skin — mechanical

Skin hardness (Shore A)45 – 85

Skin thickness0.030 – 0.120 in

Core density15 – 35 PCF

Overall density25 – 45 PCF

Tensile (ASTM D412)400 – 1,800 psi

Elongation100 – 300 %

Tear (ASTM D624, Die C)80 – 250 pli

Abrasion (Tabor H-18, 1 kg)50 – 120 mg/1,000 cycles

Integral skin — environmental

Service temp (continuous)–30 °F to 200 °F

Service temp (intermittent)–40 °F to 230 °F

Water absorption (24 h)< 1 %

UV stability (aliphatic)Non-yellowing grades available

FlammabilityUL 94 HB std; V-0 available

SterilizationEtO, gamma; autoclave on request

Cleaning-chemical compatibilityIPA, quaternary ammonium OK

Biocompatibility

Flexible foam (CUC-FF)

Density6 – 16 lbs./cu.ft.

DurometerShore A 30 – 60

Free-rise density12 – 30 PCF

IFD 25%20 – 120 lbf

ColorMolded-in color options available

Cell structureOpen or partially-open

Tensile12 – 40 psi

Elongation100 – 250 %

Compression set (75%, 22h/70°C)< 10 %

RIM (CUC-RIM)

Hardness (solid)Shore A 60 – D 60

Density (microcellular)30 – 55 PCF

Tensile1,500 – 4,500 psi

Flexural modulus10,000 – 200,000 psi

As-molded tolerance± 0.005 in

Surface finishClass A achievable

Properties vary with formulation, density, and test method. Part-specific data sheets available on request.

Certifications & documentation

What we provide.

Standard documentation

Material certs (inbound)Received from suppliers on every shipment

Material Data SheetPer part number

Dimensional inspectionSample basis

Durometer verificationAt qualification; repeatable in production

On request

First-Article InspectionAS9102

Cpk studyKey characteristics