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Willsup Inc

Polyurethane materials and formulations

We formulate and cast polyurethane compounds tailored to your specific wear, impact, and operating conditions. From soft shock-absorbing compounds to hard abrasion-resistant formulations, every material is selected based on the application.

Polyurethane property overview

Typical ranges across our polyurethane formulations and a comparison with rubber, steel and UHMW for the same wear, impact and operating conditions.

Polyurethane property overview

Property Typical range
Shore hardness range 60A–75D
Tensile strength 3,000–8,000 psi
Abrasion resistance Very high (superior to rubber and UHMW)
Temperature range -40°C to +80°C
Rebound / resilience Moderate to high
Oil and water resistance Yes
Metal bonding Chemical bond to steel, aluminum, stainless

Polyurethane vs rubber vs steel vs UHMW

Material Abrasion Impact damping Weight Best for
Polyurethane Excellent Excellent Light–medium Wear parts, rollers, seals, liners
Rubber Moderate Good Low Short-life or low-cost replacements
Steel High Poor Heavy, noisy Extreme impact only
UHMW Low Low Light Low-wear sliding surfaces only

Custom formulations for your application

Every application has different requirements. We adjust shore hardness, rebound, chemical resistance, and other properties to match your operating conditions. Our formulations include TDI ethers and esters, MDI ethers and esters, and specialty compounds for high-heat or chemical exposure.

We also work with NBR (Nitrile Butadiene Rubber) and Viton for applications where these materials are a better fit.

Additives available

  • UV stabilizers
  • Anti-static
  • Color matching
  • FDA-compliant compounds

Not sure which formulation is right?

Tell us about your application, the material being processed, and the wear problem. Our team will recommend the right compound.

Questions about polyurethane materials

  • What shore hardness do I need?
    Softer compounds (60A–80A) are better for impact absorption, noise reduction, and flexibility. Harder compounds (90A–75D) are better for abrasion resistance and cut resistance. Our engineers recommend based on your application.
  • Can you match a competitor’s formulation?
    In most cases, yes. Send us a sample or the material data sheet and we can formulate an equivalent or improved compound.
  • Do you provide material data sheets?
    Yes. Technical data sheets are available for all our standard formulations. For custom compounds, we provide full property documentation after testing.