AU/EU
polyurethane
Polyurethane elastomers (AU/EU) are the elastomer versions of polyurethane (PUR).
They are vulcanised materials and no longer have thermoplastic properties.
They are characterised by:
- Outstanding wear resistance
- High elasticity
- High impermeability
The material is used primarily for wear-resistant seals in hydraulics (mineral oil) and as a buffer element in machine construction.
They are vulcanised materials and no longer have thermoplastic properties.
They are characterised by:
- Outstanding wear resistance
- High elasticity
- High impermeability
The material is used primarily for wear-resistant seals in hydraulics (mineral oil) and as a buffer element in machine construction.
Short designation | AU/EU |
Brand name | Vulkollan® |
Chemical description | Polyurethane |
Mechanical properties |
|
Hardness range [Shore A/D] | 60 – 90 |
Wear resistance | Outstanding |
Tensile strength [MPa] | 20 – 50 |
Physical properties |
|
Density [g/cm³] | 1.25 |
Application temperatures |
|
Temperature range, short-term [°C] | -40 – 120 |
Temperature range, continuous [°C] | -25 – 80 |
Other properties |
|
Flammability according to UL 94 | Burns (still HB) |
Chemical resistance |
|
Mineral grease and oils | ++ |
Petrol | o |
Weak/strong acids | -/-- |
Weak/strong alkalis | --/-- |
Perchloroethylene | -- |
Trichloroethylene | -- |
Acetone | -- |
Alcohols | -- |
Brake fluid | -- |
Hydrolysis resistance | -- |
Weather/UV radiation | ++ |
++ very good / + good / o satisfactory / - moderate (significant change to properties) / -- unsuitable
This information is for reference only; we do not assume any liability for its accuracy. The properties of elastomer materials are highly dependent on their specific composition and their additives.