PU - Polyurethane

Clwyd reference PU
ASTM classification PU
Typical applications
  • High hydraulic/high-tress/wear applications
  • Coatings
  • Adhesives
  • Print rollers
  • Bumpers
  • Couplers
Advantages
  • Excellent physical strength
  • Excellent tear and abrasion attributes
Disadvantages
  • Poor high temperature resistance
  • Not suitable for hot water/steam applications or ketones, concentrated acids, hydrocarbons or esters
Available hardness range (Shore A) 25 - 85
Upper continuous service temp. 150°C
Min. temp. for sealing applications -50°C
Minimum non-brittle  temp.  -80°C
Tensile strength (up to) 30 MPa
Elongation at break (up to) 600%
Price Bracket Low
ASTM 1 Oil Excellent
ASTM 2 Oil Good
ASTM 3 Oil Good
Kerosene Excellent
Liquid B Average
Liquid 101 Good
Phosphate ester None
Ketone None
Toluene None
Iso-octane Good
Methanol None
Acid (weak) None
Acid (strong) None
Base (weak) None
Base (strong) None
Hydrogen sulphide None
Steam None
Ozone Excellent
Radiation Average
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