ISO 5892:2024

International
Standard
ISO 5892
Third edition
Rubber building gaskets —
2024-08
Materials for preformed solid
vulcanized structural gaskets —
Specification
Profilés en caoutchouc pour le bâtiment — Matériaux pour
profilés de structure compacts préformés vulcanisés —
Spécifications
Reference number
© ISO 2024
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Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Types of material . 2
5 Working temperature range . 2
6 Material and workmanship . 2
7 Dimensions and tolerances . 2
8 General requirements . 3
8.1 Test pieces .3
8.2 Hardness .3
8.3 Tensile strength and elongation at break .3
8.4 Compression set .3
8.4.1 Compression set at elevated temperatures .3
8.4.2 Compression set at low temperatures .3
8.5 Accelerated ageing .3
8.6 Ozone resistance .4
8.7 Summary of property requirements.4
9 Optional requirements and recommendations . 4
9.1 General .4
9.2 High-ozone resistance .4
9.3 Holding force .4
9.4 Watertightness .5
9.5 Flammability .5
9.6 Contact and migration staining .5
9.7 Low-temperature brittleness .5
9.8 Lifetime estimation .5
9.8.1 General .5
9.8.2 Method 1 by stress relaxation .5
9.8.3 Method 2 by compression set.5
9.8.4 Summary of optional property requirements .6
Annex A (informative) Holding force test . 7
Annex B (informative) Remarks regarding the lifetime estimation in 9.8 .10
Bibliography .11

iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
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Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee
SC 4, Products (other than hoses).
This third edition cancels and replaces the second edition (ISO 5892:2013), which has been technically
revised.
The main change is as follows: lifetime estimation has been added as an optional requirement in Clause 9.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
International Standard ISO 5892:2024(en)
Rubber building gaskets — Materials for preformed solid
vulcanized structural gaskets — Specification
1 Scope
This document specifies the material requirements for preformed, solid vulcanized rubber structural
gaskets in sealing and supporting applications for buildings.
NOTE Specifications for non-supporting gaskets are given in ISO 3934.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 48-4, Rubber, vulcanized or thermoplastic — Determination of hardness — Part 4: Indentation hardness by
durometer method (Shore hardness)
ISO 188:2023, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 812:2017, Rubber, vulcanized or thermoplastic — Determination of low-temperature brittleness
ISO 815-1, Rubber, vulcanized or thermoplastic — Determination of compression set — Part 1: At ambient or
elevated temperatures
ISO 815-2, Rubber, vulcanized or thermoplastic — Determination of compression set — Part 2: At low
temperatures
ISO 1382, Rubber — Vocabulary
ISO 1431-1, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and dynamic
strain testing
ISO 3302-1, Rubber — Tolerances for products — Part 1: Dimensional tolerances
ISO 3384-1:2024, Rubber, vulcanized or thermoplastic — Determination of stress relaxation in compression —
Part 1: Testing at constant temperature
ISO 11346, Rubber, vulcanized or thermoplastic — Estimation of life-time and maximum temperature of use
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1382 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/

3.1
structural gasket
building gasket (3.2) that directly supports glass substrates, etc. and makes components watertight and
airtight
Note 1 to entry: A structural gasket consists of gaskets and lock strips (3.3).
3.2
gasket
component with channels which support both glasses and support frames
Note 1 to entry: A gasket that has two channels is called a double-channel gasket and a gasket that has one channel is
called a single-channel gasket.
3.3
lock strip
component that is inserted into the lock-strip cavities for ensuring the required watertightness and
airtightness
3.4
working temperature
temperature range where the gasket (3.2) is intended to be used
4 Types of material
Two types of materials are specified. Type E, with a nominal hardness of 75 Shore A, is intended for gaskets
and the lock strip. Type F, with a nominal hardness of 85 Shore A, is intended only for the lock strip.
5 Working temperature range
The working temperature ranges of gaskets are divided into the following categories:
a) T : temperature of gasket: −20 °C to +55 °C;
b) T : temperature of gasket: −20 °C to +85 °C;
c) T : temperature of gasket: −40 °C to +70 °C;
d) T : temperature of gasket: −40 °C to +100 °C.
6 Material and workmanship
6.1 Gaskets shall be made from ozone-resistant rubber and shall not depend for ozone resistance solely on
surface protection which can be removed by abrasion, detergents or other means.
6.2 Gaskets shall be free from porosity, significant surface defects and dimensional irregularities,
particularly on the sealing faces.
7 Dimensions and tolerances
Dimensions and toleranc
...