GB/T 24498-2025 in English
VALIDGaskets for doors,windows and curtain walls of buildings
- Issued on:2025-01-24
- Implemented on:2025-08-01
- File Format:PDF
- Delivery:Via email within 1 business day
Price(USD)：
$375.00
$364.00
$364.00
| Standard No: | GB/T 24498-2025 |
| Document status: | VALID |
| Title in English: | Gaskets for doors,windows and curtain walls of buildings |
| Title in Chinese: | 建筑门窗、幕墙用密封胶条 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1 business day |
| Issued on: | 2025-01-24 |
| Implemented on: | 2025-08-01 |
| Superseding: |
GB/T 24498-2009 Gaskets for doors,windows and curtain walls of buildings
|
| ICS Classification: | 91.100.50-Binders. Sealing materials |
| Chinese Classification: | Q24-Sealing material |
| Professional Classification: | GB-National Standard |
| Related Keywords: | version new additions
new test indicators requirements new limits curtain walls new definitions |
| Related Topics: | sealing strip
doors and windows construction technology seal Building doors and windows Lubricant for building doors and windows gb 24498 |
《GB/T 24498-2025建筑门窗、幕墙用密封胶条》由TC448（全国建筑幕墙门窗标准化技术委员会）归口，主管部门为住房城乡建设部。
Introduction
Evolution of core technologies of the standard
| Improvement module | 2009 version | New additions in the 2025 version |
|---|---|---|
| Terminology system | 5 basic terms | 3 new definitions such as composite sealing strip and compression force |
| Material testing | 4 routine tests | 5 new test indicators such as tear strength were added |
| Safety specifications | No requirements | New limits on the content of harmful substances such as lead and mercury |
Analysis of core material parameters
Comparison of thermal stability of vulcanized rubber
Take EPDM rubber as an example: after 168 hours of aging in an environment of 70±2℃, the new regulation sets the hardness fluctuation value to ≤±5HA, which is a 42% improvement in stability compared to the old version.
| Hardness Grading | Tensile Strength(MPa) | Compression Deformation(%) |
|---|---|---|
| 50HA | ≥7.0 | ≤35 |
| 90HA | ≥7.5 | Optimized Adjustment Mechanism |
Implementation Points and Cases
Rail Transit Project Application Example:
- Wuhan Metro Line 8 Selects FH-JX Composite Sealing Strip
- Passed the 7-level Rebound Recovery Test(TLY-03A Tester)
- Smoke density value is controlled at SDR≤75 to meet fire protection standards
Key points of production upgrade
| Transformation link | Equipment requirements | Control standards |
|---|---|---|
| Molding accuracy | ±0.03mm extrusion die head | Refer to GB/T3672.1-2002 E1 level |
| Vulcanization process | Three-stage temperature control system | 150℃±1℃ steady-state maintenance |
Quality acceptance operation process
- Density detection: microwave resonance method replaces traditional weighing
- Compression force verification: supporting ZX-200 material analyzer
- VIP sampling specification: 300mm whole section sampling principle
| Category | Applicable temperature (℃) | Aging cycle |
|---|---|---|
| EPDM | -40~120 | 5 years↑ |
| Thermoplastic elastomer | -30~80 | 3 years re-inspection required |
Sample only — not a preview of GB/T 24498-2025
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