Integral Vulcanized Flange Rubber Expansion Joint
The integral vulcanized flange rubber expansion joint i […]
The integral vulcanized flange rubber expansion joint is a high-performance flexible connector in which the rubber body and flanges are molded together through a high-temperature vulcanization process. Compared with traditional split-type joints, it offers superior sealing performance, higher strength, and greater reliability. It is widely used in water supply, HVAC, power plants, chemical industries, and marine piping systems.
Key Features
- Integral Vulcanization Design
The rubber body and flanges are formed as one unit, eliminating the need for additional gaskets and effectively preventing leakage. - Excellent Sealing Performance
The one-piece structure reduces connection interfaces, ensuring long-term sealing reliability even under demanding conditions. - Outstanding Vibration and Noise Reduction
Effectively absorbs mechanical vibration and minimizes noise transmission from pumps, compressors, and other equipment. - Multi-Directional Compensation
Capable of absorbing axial, lateral, and angular displacements caused by thermal expansion or installation misalignment. - Easy Installation
No need for separate flange assembly, saving installation time and labor costs.
Structure
- Inner rubber layer (media-resistant)
- Reinforcement layers (fabric cord)
- Outer rubber layer (weather and aging resistant)
- Integral vulcanized flanges (carbon steel or stainless steel, customizable standards)
Applications
- Pump and valve connections
- HVAC systems
- Power plant pipelines
- Chemical and corrosive media systems
- Marine piping systems
Advantages
- Reliable sealing with reduced leakage risk
- Strong structure with excellent pressure resistance
- Reduces pipeline stress and vibration
- Long service life with low maintenance cost
- Customizable in size, pressure rating, material, and flange standard
If the required specifications differ from our standard, we can provide customization based on samples or drawings.
For inquiries, please contact:
Email: sales01@songjiangflex.com
Tel/WhatsApp: +86 13032112360
The standard technical parameters for our integral vulcanized flange rubber expansion joints are as follows:
| DN (mm) | Inch | Standard Length (mm) | Producible Length (mm) | Axial Compression (mm) | Axial Extension (mm) | Lateral Movement (mm) | Angular Movement (°) | Standard Pressure (bar) | Max Pressure (bar) |
|---|---|---|---|---|---|---|---|---|---|
| 50 | 2″ | 150 | 150-500 | 10 | 20 | 10 | 10 | 10 | 80 |
| 65 | 2½” | 200 | 150-500 | 10 | 20 | 20 | 10 | 10 | 80 |
| 80 | 3″ | 200 | 150-500 | 10 | 20 | 20 | 10 | 10 | 80 |
| 100 | 4″ | 200 | 150-500 | 10 | 25 | 20 | 10 | 10 | 80 |
| 125 | 5″ | 200 | 150-500 | 10 | 25 | 20 | 10 | 10 | 50 |
| 150 | 6″ | 200 | 150-500 | 10 | 25 | 20 | 10 | 10 | 50 |
| 175 | 7″ | 200 | 150-500 | 15 | 25 | 20 | 10 | 10 | 50 |
| 200 | 8″ | 200 | 150-500 | 15 | 25 | 20 | 10 | 10 | 50 |
| 225 | 9″ | 200 | 200-500 | 15 | 25 | 20 | 10 | 10 | 50 |
| 250 | 10″ | 200 | 200-500 | 15 | 25 | 20 | 8 | 10 | 40 |
| 300 | 12″ | 200 | 200-500 | 15 | 25 | 20 | 8 | 10 | 40 |
Our Commitment：
1、Raw Materials: Strict adherence to raw material standards.；
2、Production Process: Rigorous control of each production stage with full traceability.；
3、Testing Center: Regular testing of raw materials, rubber compounds, finished product performance, pressure, load-bearing capacity, and deflection.；
4、After-Sales Service:Commonly used products: 3-year warranty.
Products with high-temperature, acid/alkali resistance, and oil resistance requirements: 2-year warranty.Custom products for special applications: 1-year warranty.For any quality issues, we will provide a written response within 12 hours and a resolution within 24 hours. If there is a quality problem, our factory will replace the product free of charge.；
