Polyurethane is a type of thermoplastic elastomer that can be formulated in a variety of ways, each yielding very different mechanical properties and resistances. Generally Polyurethanes have excellent wear and abrasion resistance, good weathering resistance, and moderate resistance to oils and lubricants depending on formulation. Not recommended for use in demanding chemical or thermal environments.
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View Datasheet Relative Price: 4 Relative Availability: 3 -65  250  70  Yellow-Translucent 
Greatly increased mechanical properties and wear resistance. 
View Datasheet Relative Price: 4 Relative Availability: 3 -65  250  90  Yellow-Translucent 
Higher hardness and extrusion resistance for use in higher pressure applications. Greatly increased mechanical properties and wear resistance. 
View Datasheet Relative Price: 2 Relative Availability: 3 -30  180  90  Yellow-Translucent 
Higher hardness, general purpose compound. 
View Datasheet Relative Price: 2 Relative Availability: 4 -30  180  70  Yellow-Translucent 
General purpose compound. Not for use in higher pressure applications. 
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Common Names:

Urethane, AU, EU, PU

Trade Names:

Adiprene®, Millathane®, Vibrathane®

General Description:

Polyurethane is an organic polymer. Polyurethanes are formed by reacting a polyol (an alcohol with more than two reactive hydroxyl groups per molecule) with a diisocyanate or a polymeric isocyanate in the presence of suitable catalysts and additives. Polyurethane is a widely used compound due to its superior strength, tear and abrasion resistance.  Polyurethane also provides excellent permeation resistance.

Features:

  • Good hydraulic oil and gasoline resistance
  • Resistant to pure aliphatic hydrocarbons (propane, butane, fuel)
  • Resistance to mineral and silicone oils and greases
  • Resistant to water, oxygen, ozone and aging
  • Excellent tear and abrasion resistance
  • Available in multiple types and compounds to meet performance and cost requirements

Limitations:

  • Not compatible with acids, ketones, esters, ethers, alcohols, glycols
  • Hot water, steam, alkalis and amines 

Service Temperature:

-65° to 225° F (-54° to 107° C).  Depending on compound and application