Standard Briefing:Stadard ID: GB/T 24498-2025
Stadard Title: Gaskets for doors, windows and curtain walls of buildings
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Basic Data: | Standard ID | GB/T 24498-2025 (GB/T24498-2025) | | Description (Translated English) | Gaskets for doors, windows and curtain walls of buildings | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q24 | | Classification of International Standard | 91.100.50 | | Word Count Estimation | 22,268 | | Date of Issue | 2025-01-24 | | Date of Implementation | 2025-08-01 | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | Contents, Scope, and Excerpt:GB/T 24498-2025.Sealing strips for building doors, windows and curtain walls
ICS 91.100.50
CCSQ24
National Standard of the People's Republic of China
Replace GB/T 24498-2009
Sealing strips for building doors, windows and curtain walls
Released on 2025-01-24
2025-08-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Range 1
2 Normative references 1
3 Terms and Definitions 2
4 Classification, code and mark 2
5 Technical Requirements 3
6 Test methods 9
7 Inspection Rules 14
8 Marking, packaging, transportation and storage 16
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 24498-2009 "Sealing strips for building doors, windows and curtain walls". Compared with GB/T 24498-2009, except for structural
In addition to adjustments and editorial changes, the main technical changes are as follows.
--- Added the terms and definitions of sealing strips (see 3.1), compression force (see 3.6) and composite sealing strips (see 3.7);
--- Changed the free height (see 3.2, 3.1 of the.2009 edition), rebound recovery (see 3.3, 3.2 of the.2009 edition), working range (see
3.4, 3.3 of the.2009 edition) and tensile recovery (see 3.5, 3.4 of the.2009 edition);
--- Changed the classification, code and mark (see Chapter 4, Chapter 4 of the.2009 edition);
--- Changed the material performance requirements for vulcanized rubber sealing strips (see Table 3, Table 4, Table 2 of the.2009 edition);
--- Increased tear strength requirements for material properties (see Table 3 to Table 6);
--- Added the performance requirements of sponge rubber materials (see Table 5);
--- Changed the material performance requirements for thermoplastic elastomer sealing strips (see Table 6, Table 3 of the.2009 edition);
--- Added flame retardant material performance requirements (see Table 7);
--- Added the performance requirements of water-swellable materials for water-swellable composite sealing strips (see Table 8);
--- Added the performance requirements for coated sponge composite sealing strip materials (see Table 9);
--- Deleted the heating weight loss requirements of material properties (see Table 2 and Table 3 of the.2009 edition);
--- Deleted the springback recovery classification of material properties after thermal aging (see Table 2 and Table 3 of the.2009 edition);
--- Increased product performance. product density (see 5.4.1), heating weight loss rate (see 5.4.4), peeling resistance (see 5.4.8), friction coefficient
(see 5.4.9), brittle temperature (see 5.4.10), repeated water absorption performance (see 5.4.11), high and low temperature resistance (see 5.4.12), fatigue resistance
Requirements for performance (see 5.4.13), compression force (see 5.4.14), and hazardous substance content limits (see 5.4.15);
--- Added the test method for tear strength (see 6.2.3);
--- The test method for compression set has been changed (see 6.2.4, 6.4.2 of the.2009 edition);
--- Added oxygen index (see 6.2.8), vertical combustion performance (see 6.2.9), smoke density (see 6.2.10), water expansion performance (see
6.2.11) test method;
--- Increased product density (see 6.5.1), heating weight loss rate (see 6.5.4), peeling resistance (see 6.5.8), friction coefficient (see 6.5.9),
Brittle temperature (see 6.5.10), repeated water absorption performance (see 6.5.11), high and low temperature resistance (see 6.5.12), fatigue resistance (see
6.5.13), compression force (see 6.5.14), and test methods for the limit of harmful substance content (see 6.5.15).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the Ministry of Housing and Urban-Rural Development of the People's Republic of China.
This document is under the jurisdiction of the National Technical Committee for Standardization of Building Curtain Walls, Doors and Windows (SAC/TC448).
This document was drafted by. China Construction Metal Structure Association, Sinopec (Beijing) Chemical Research Institute Co., Ltd., Jiangyin Haida Rubber & Plastic Co., Ltd.
Co., Ltd., Ningbo Xin'an Dong Sealing and Insulation System Co., Ltd., Zhongshan Lianheqiang Rubber and Plastic Technology Co., Ltd., Shenyang Ruide Plastic Manufacturing Co., Ltd.
Company, Guangdong Hehe Building Hardware Products Co., Ltd., Jiangxi Fenfa Technology Co., Ltd., Changzhou Chuangyou Plastic Co., Ltd., Celanese
(Shanghai) International Trade Co., Ltd., Hebei Jinzhuyou Plastic Technology Co., Ltd., Zhejiang Boshilong Sealing Technology Co., Ltd., Guangdong Huangpaiding
Home Furnishing Group Co., Ltd., Hennessy Industrial Co., Ltd., Guangdong Jianmei Building Technology Development Co., Ltd., Hebei Aorun Shunda Window Industry
Co., Ltd., Foshan Shunde Rongji Plastic Products Co., Ltd., Haining Lijialong Door and Window Sealing Strip Co., Ltd., Chengdu Guibao Technology Co., Ltd.
Co., Ltd., Shandong Huajian Aluminum Group Co., Ltd., Liaoning Hengxin Aluminum Co., Ltd., Xuzhou Meigu Doors and Windows Co., Ltd., Guangzhou Baiyun Science and Technology
Technology Co., Ltd., Sichuan Comet Doors and Windows Technology Co., Ltd., and China Construction Shenzhen Decoration Co., Ltd.
The main drafters of this document are. Wang Xiaojun, Hu Xiaoyi, Zhao Benjun, Li Na, Chen Qian, Chen Zhenwei, Cao Ziwu, Chen Zhenlei, Qian Jie, Chen Xiang, Jin Huaying,
Hu Yineng, Zhou Pufeng, Wang Yufan, Yu Zhilong, Ni Haiqiong, Jiang Guorong, Chen Xiaomei, Luo Sibin, Cheng Hao, Zhang Xingang, Wang Yi, Fu Zien, He Haijun,
Zhang Weifang.
This document was first published in.2009 and this is the first revision.
Sealing strips for building doors, windows and curtain walls
1 Scope
This document specifies the classification, code and marking, technical requirements, test methods, inspection rules and standards for sealing strips for building doors, windows and curtain walls.
Labeling, packaging, transportation and storage.
This document applies to the design, production and inspection of sealing strips for building doors, windows and curtain walls.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 250 Textiles - Grey scale for colour fastness tests
GB/T 528-2009 Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber
GB/T 529-2008 Determination of tear strength of vulcanized rubber or thermoplastic rubber (trouser-shaped, right-angled and crescent-shaped test specimens)
GB/T 531.1 Test method for indentation hardness of vulcanized rubber or thermoplastic rubber Part 1.Shore hardness tester method (Shore hardness)
GB/T 533-2008 Determination of density of vulcanized rubber or thermoplastic rubber
GB/T 1682 Determination of low temperature brittleness of vulcanized rubber - Single specimen method
GB/T 2828.1 Sampling procedures for inspection by attributes Part 1.Sampling plans for batch inspection based on the acceptance quality limit (AQL)
GB/T 3512 Hot air accelerated aging and heat resistance tests for vulcanized rubber or thermoplastic rubber
GB/T 3672.1-2002 Tolerances for rubber products Part 1.Dimensional tolerances
GB/T 3672.2-2002 Tolerances for rubber products Part 2.Geometrical tolerances
GB/T 6343 Determination of apparent density of cellular plastics and rubber
GB/T 7759.1-2015 Determination of compression set of vulcanized rubber or thermoplastic rubber Part 1.Determination of compression set of vulcanized rubber or thermoplastic rubber at room temperature and high temperature
Under the conditions
GB/T 7762 Static tensile test for resistance to ozone cracking of vulcanized rubber or thermoplastic rubber
GB/T 8627 Test method for smoke density of burning or decomposition of building materials
GB/T 9881-2008 Rubber Terminology
GB/T 10707 Determination of combustion properties of rubber
GB/T 16422.2-2022 Plastics laboratory light source exposure test method Part 2.Xenon arc lamp
GB 16776-2005 Silicone structural sealant for building
GB/T 18173.3-2014 Polymer waterproof materials Part 3.Water-swelling rubber
GB/T 20739 Storage Guide for Rubber Products
GB/T 21282-2007 Rubber and plastic sealing strips for passenger cars
QC/T 941-2013 Detection method for mercury in automotive materials
QC/T 942-2021 Detection method for hexavalent chromium in automotive materials
QC/T 943-2013 Detection method of lead and cadmium in automotive materials
QC/T 944-2013 Detection method of polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs) in automotive materials
......
GB/T 24498-2009
GB
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.50
Q 24
Gaskets for doors, windows
and curtain walls of buildings
ISSUED ON. OCTOBER 30, 2009
IMPLEMENTED ON. APRIL 01, 2010
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the PRC.
Table of contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Classification, code and marking ... 6
5 Requirements ... 7
6 Test method ... 10
7 Inspection rules ... 18
8 Signs, packaging, transportation, and storage ... 21
Appendix A (Normative) Inspection records and requirements ... 22
Appendix B (Informative) Optional main material colors commonly used for
gaskets ... 23
Foreword
Appendix A of this standard is a normative appendix, AND Appendix B is an
informative appendix.
This standard was proposed by the Ministry of Housing and Urban and Rural
Development of the People's Republic of China.
This standard shall be under the jurisdiction of the Ministry of Housing and
Urban and Rural Development of the People's Republic of China - Building
Products and Components Standardization Technical Committee.
The responsible drafting organization of this standard. China Building Metal
Structure Association - Building Door & Window Accessories Committee.
The participating drafting organizations of this standard. Jiangyin Haida Rubber
& Plastic Co., Ltd., National Chemical Building Materials Testing Center,
Foshan Hehe Construction Hardware Products Co., Ltd., Changzhou
Chuangyou Plastic Co., Ltd., Yiliou Chemical Trading (Shanghai) Co., Ltd.,
Ningbo Xin'andong Rubber Products Co., Ltd., Fujian Jinjiang Fenfa Rubber
Products Co., Ltd.
The main drafters of this standard. Liu Xuqiong, Gu Huijuan, Sun Quan, Liu
Xuelin, Qian Zhifeng, Zhang Hong, Yu Taishan, Chen Zhenlei.
Gaskets for doors, windows
and curtain walls of buildings
1 Scope
This standard specifies the terms and definitions, classification, code and
marking, requirements, test methods, inspection rules and signs, packaging,
transportation and storage of gaskets for doors, windows and curtain walls of
buildings.
This standard applies to the vulcanized rubber, thermoplastic elastomer type
elastic gaskets for the doors, windows and curtain walls of buildings. It is not
applicable to the foaming type or composite gaskets.
2 Normative references
The provisions in following documents become the provisions of this Standard
through reference in this Standard. For the dated references, the subsequent
amendments (excluding corrections) or revisions do not apply to this Standard;
however, parties who reach an agreement based on this Standard are
encouraged to study if the latest versions of these documents are applicable.
For undated references, the latest edition of the referenced document applies.
GB 250-1995 Gray scale for assessing change in color
GB/T 528-1998 Rubber, vulcanized or thermoplastic - Determination of
tensile stress-strain properties
GB/T 531-1999 Rubber - Determination of indentation hardness by means
of pocket hardness meters
GB/T 1682-1994 Rubber, vulcanized - Determination of low-temperature
brittleness (single test piece method)
GB/T 2411-2008 Plastics and ebonite - Determination of indentation
hardness by means of a durometer (Shore hardness)
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1.
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 3512-2001 Rubber, vulcanized or thermoplastic - Accelerated ageing
and heat resistance tests
GB/T 3672.1-2002 Rubber - Tolerances of products - Part 1. Dimensional
tolerances
GB/T 3672.2-2002 Rubber - Tolerances of products - Part 2. Geometrical
tolerances
GB/T 5470-2008 Plastics - Determination of the brittleness temperature by
impact
GB/T 7759-1996 Rubber, vulcanized or thermoplastic - Determination of
compression set at ambient elevated or low temperatures
GB/T 7141-2008 Plastics - Methods of heat aging
GB/T 7762-2003 Rubber, vulcanized or thermoplastic - Resistance to ozone
cracking - Static strain test
GB/T 9881-2008 Rubber - Vocabulary
GB/T 14436 General principles of industrial product guarantee documents
GB/T 16422.2-1999 Plastics - Methods of exposure to laboratory light
sources - Part 2. Xenon-arc source
GB 16776-2005 Structural silicon sealants for building
GB/T 20739-2006 Rubber products - Guidelines for storage
3 Terms and definitions
GB/T 9881-2008 and the following terms and definitions apply to this standard.
3.1
Free height
It refers to the height of the gasket sample or product under zero load.
3.2
Deflection recovery
5.3.2.4.1 After the pollution and compatibility test between the gasket and the
profile and glass, it is allowed for the light yellow pollution mark of the gasket
sample on the profile and glass, BUT it is not allowed to have deep color outline
or solid impression. The surfaces of the profiles, glass, and gasket samples
shall be free from foaming, sticky, or rugged appearance.
5.3.2.4.2 After the pollution and compatibility test of the gasket and the silicon
structural adhesive and silicon sealant, the color change of the structural
adhesive and sealant test sample as compared with the control sample of the
structural adhesive and sealant shall be equal to or less than the level 2
requirements in Table A.1 of GB 16776-2005.
5.3.2.5 Ageing performance
5.3.2.5.1 Ozone ageing resistance
After the ozone ageing resistance for 168 h, the sample surface shall be free
from cracking.
5.3.2.5.2 Light ageing performance
After the light ageing test for 8GJ/m2 (4000 h), the sample shall comply with the
following requirements.
a) Appearance. the surface does not appear crack, AND the color shall be
not less than level 3 if assessed in accordance with the grey scale level of
GB 250-1995.
b) Performance. When the static tensile elongation reaches 50%, the sample
shall not break.
6 Test method
6.1 Sample preparation and requirements
The time interval between the molding and testing of the gasket product or
sample shall not exceed 3 months, AND it shall ensure that the gasket products
or samples are under the original status after processing AND able to be tested.
When providing the gasket products or samples, it shall provide the drawings
and data containing such information as cross-sectional dimensions, shapes,
design hardness, designed working compression range, and the compressed
working face. The requirements for the records and reports are as shown in
Appendix A.
6.2 Appearance
In the natural light or equivalent artificial light source, at a distance of 0.3 m,
CONDUCT visual inspection for the product appearance quality.
6.3 Dimensional tolerance
Dimensional tolerances and geometric tolerances can be measured with a
projector that can be enlarged 10 times.
6.4 Performance
6.4.1 Physical properties of the material
6.4.1.1 Hardness
At 23 °C ± 2 °C, the vulcanized rubber type is prepared and detected in
accordance with GB/T 531-1999, AND the thermoplastic elastomer type is
prepared and detected in accordance with GB/T 2411-2008.
6.4.1.2 Tensile strength, elongation at break
In accordance with GB/T 528-1998, the 1 type dumbbell-like sample is used for
test at the test speed of 500 mm/min ± 50 mm/min.
6.4.2 Compression permanent deformation
In accordance with GB/T 7759-1996, the B-type sample is used for test.
6.4.2.1 Hot air ageing
6.4.2.1.1 Hardness variation, tensile strength variation rate, elongation at break
variation rate
Vulcanized rubber type is tested and calculated in accordance with GB/T 3512-
2001, AND the thermoplastic elastomer type is tested and calculated in
accordance with GB/T 7141-2008.
6.4.2.1.2 Loss on heating
In accordance with GB/T 528-1998, USE the type 1 dumbbell-like sample (5
samples for each group); accurately WEIGH 0.001 g; PLACE the sample in the
100 °C ± 2 °C environment and START time keeping; after reaching to the
specified time, TAKE the sample out; PLACE it into a desiccator and ALLOW it
stand for 16 h; RE-WEIGH the heated sample, accurate to 0.001 g. The loss on
heating is calculated in accordance with the equation (1), AND then the
arithmetic mean is calculated.
6.4.2.3 Low temperature brittleness
SELECT the B type samples to conduct tests for vulcanized rubber type in
accordance with GB/T 1682-1994 AND thermoplastic elastomer type in
accordance with GB/T 5470-2008.
6.4.3 Product performance
6.4.3.1 Deflection recovery
6.4.3.1.1 Test device
Electric blower box.
6.4.3.1.2 Sample
PLACE the gasket product in free state in the environment of 23 °C ± 2 °C and
relative humidity of 50% ± 5%, and CUT three sample strips of length 100 mm
~ 500 mm.
6.4.3.1.3 Test procedure
CONDUCT test and calculation in acc...
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