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PU
(U203-G95, PUR, Ecopur)
Thermoplastic polyurethane elastomer. It is characterised by high abrasion resistance, low permanent deformation factor under compression, a high resistance to break. It is used mainly in self-sealing lip (groove) rings, scrapers, self-sealing chevron rings and special seals. In practice, this material is also used for other technical profiles.
| Norm | Unit | Value | |
|---|---|---|---|
| Density | DIN 53479 | g/cm³ | 1,10 |
| Hardness at 20 °C | DIN 53505 | Shore A | 95 ±2 |
| Modulus 100 | DIN 53504 | N/mm² | >12 |
| Yield strength | DIN 53504 | N/mm² | >38 |
| Elongation at break | DIN 53504 | % | >520 |
| Tear strength | DIN 53515 | KN/m | 158 |
| Decompression | DIN 53512 | % | 40 |
| Compression test* | DIN 53517 | % | 31 |
| Hardness at -5°C | DIN 53505 | Shore A | 95 |
| Hardness at +80°C | DIN 53505 | Shore A | 93 |
| Minimum operation temperature | °C | -30 | |
| Maximum operation temperature | °C | +105 |
