ISO 23711:2022
Elastomeric seals — Requirements for materials for pipe joint seals used in water and drainage applications — Thermoplastic elastomers
This document specifies requirements for materials used for moulded seals made of thermoplastic elastomers (TPEs) for joints in:
a) thermoplastic piping systems for non-pressure wastewater discharge (intermittent flow at up to 95 °C) inside buildings;
b) thermoplastic piping systems for non-pressure underground drainage and sewerage (continuous flow at up to 45 °C and intermittent flow at up to 95 °C);
c) thermoplastic rainwater piping systems.
General requirements for finished joint seals are also given; any additional requirements for a particular application are specified in the relevant product standards taking into account that the performance of pipe joints is a function of the seal material properties, seal geometry and pipe joint design.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Finished-seal requirements
5.1 Dimensional tolerances
5.2 Imperfections and defects
5.3 Hardness
5.4 Tensile strength and elongation at break
5.5 Compression set in air
5.5.1 General
5.5.2 Compression set at 23 °C and 70 °C
5.5.3 Low temperature compression set at −10 °C
5.6 Accelerated ageing in air
5.7 Stress relaxation in compression
5.8 Stress fall
5.9 Volume change in water
5.10 Ozone resistance
5.11 Change in volume in oil [for type WH only (see Table 3)]
6 Test pieces and temperature
6.1 Preparation of test pieces
6.2 Test temperature
7 Quality assurance
8 Storage
9 Designation
10 Marking and labelling
Annex A (informative) Quality assurance
Annex B (informative) Guidance on storage of seals
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Finished-seal requirements
5.1 Dimensional tolerances
5.2 Imperfections and defects
5.3 Hardness
5.4 Tensile strength and elongation at break
5.5 Compression set in air
5.5.1 General
5.5.2 Compression set at 23 °C and 70 °C
5.5.3 Low temperature compression set at −10 °C
5.6 Accelerated ageing in air
5.7 Stress relaxation in compression
5.8 Stress fall
5.9 Volume change in water
5.10 Ozone resistance
5.11 Change in volume in oil [for type WH only (see Table 3)]
6 Test pieces and temperature
6.1 Preparation of test pieces
6.2 Test temperature
7 Quality assurance
8 Storage
9 Designation
10 Marking and labelling
Annex A (informative) Quality assurance
Annex B (informative) Guidance on storage of seals
Bibliography