Quality & Regulations
Quality System
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ISO 9001:2008International quality management system
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CE MarkingDeclaration of performance compliant with 305/211 Regulation
Regulation on product
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EN 681-1:1996Material requirements for pipe joint seals used in water and drainage applications
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STUVA RecommendationsFor Testing and Application of sealing Gaskets in segmental Linings
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ISO 3302-1 2014Specification for dimensional tolerances
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ISO 2230:2002Guidelines for storage
Material properties
| Property | Method | Unit | Specified value |
|---|---|---|---|
| Hardness (Micro) | ISO 48 | IRHD | 65 ± 5 |
| Tensile strength | ISO 37 | MPa | 9 min. |
| Elongation at break | ISO 37 | % | 200 min. |
| Compression set 72 hours / 23 ºC | ISO 815 | % | 15 max. |
| Compression set 24 hours / 70 ºC | ISO 815 | % | 20 max. |
| Compression set 72 hours / -10 ºC | ISO 815 | % | 50 max. |
| Heat ageing 7 days / 70ºC | ISO 188 | ||
| Hardness change | +8º / -5º | ||
| Tensile strength change | % | -20 max. | |
| Elongation at break change | % | +10 / -30 | |
| Stress relaxation 7 days / 23ºC | ISO 3384 | % | 16 max. |
| Stress relaxation 100 days / 23ºC | ISO 3384 | % | 23 max. |
| Stress relaxation per logarithmic decade | ISO 3384 | % | 6,3 max. |
| Water absorption 7 days / 70 ºC | ISO 1817 | % | +8 / -1 |
| Ozone resistance | ISO 1431-1 | No cracking |