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Covison® Rail Sealing Solutions
We Understand Your Demands
At Saint-Gobain Sealing Solutions, we understand the challenges of your rail applications. As a result of our more than 40 years of experience in seal design and manufacturing, product development and compounds, we are a trustworthy partner able to provide high performance solutions for all your business demands and needs.
We manufacture an extensive range of extruded and molded silicone seals that are co-designed with our customers to offer the perfect fit for their applications. Not only are we able to provide ready to use products thanks to the EN45545 compliant material we developed, but also peace of mind solutions. We formulate our silicone materials in Saint-Gobain labs to ensure that they will meet your performance requirement and be ready for use in your applications.
If needed, Saint-Gobain can also help in your testing phase as well as provide all appropriate documentation for certifications purposes.
To adapt to the evolving railway industry regulatory environment and REACH compliance, we offer solutions specifically designed to the rail industry. Inquire about the compound 9774ED, which is in compliance with EN45545-2-2013, class HL2 and HL3.
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Sealing Applications for Rail Transport
Saint-Gobain silicone seals are designed for several parts of a train car (eg.train bogie) and offer such physical properties as great vibration and tear resistance ,good elongation at break ,and more. Our Solutions are also adaptable to meet any constraint you may encounter.Click here to download a brochure
Our capabilities cover a wide range of train wagon body structures and interior parts, including:
Silicone profile are used in this demanding part of the wagon, where outside conditions and a high level of vibrations are encountered.
Silicone seals provide a more durable option in this application.
These seals are usually very complex, ask our engineers what solution best fit your need!
Window gaskets are required to have the perfect design for a safer applications and must resist critical conditions and cleaning agents.
One of the numerous applications of silicone inside a wagon.
Choose a peace of mind solution for this part where maintenance tasks are usually complex…and expensive!
You can choose from one of our 50 colors and our custom designs to better fit the asthetics of your cabin.
Typical Seal Properties
Our seals are EN45545 2 HL3, which is the highest class with the high physical properties values as presented below:
| Properties | Methods | Values or Ratings |
|---|---|---|
| Durometer Hardness (Shore A) | NF ISO 7619-1 | 70 |
| Basic Color | - | Night Blue |
| Tear Resistance - Angle Test Piece (N/mm) | NF ISO 34-1 Ba | 19 - 20 |
| Specific Gravity (g/cm3) | NF ISO 2781 | 1.3 - 1.4 |
| Tensile Strength (MPa) | NF ISO 37 | 9 |
| Compression Set (%) (70hours - 150°C - 25%) | NF ISO 815-1 | 20 |
| Elongation at Break (%) | NF ISO 37 | 230 |
| Maximum Recommended Operating Temperature (°C) | - | 200°C |
| Low Temperature, Flexibility (°C) | - | -60°C |
Unless otherwise noted, all tests were conducted at room temperature (73°F). Values shown were determined on 0.075" thick extruded strip or 0.075" thick molded ASTM plaques or molded ASTM durometer buttons. These figures are intended as a guide and should not considered as specifications. The user must check that these properties are compliant with the application.
If your application require lower class, we can provide seals with EN45545 HL2 with properties values as presented below:
| Properties | Methods | Values or Ratings |
|---|---|---|
| Durometer Hardness (Shore A) | NF ISO 48-4 | 70 |
| Basic Color | - | Black |
| Tear Resistance - Angle Test Piece (N/mm) | NF ISO 34-1 Ba | 33 |
| Specific Gravity (g/cm3) | NF ISO 2781 | 1.18 |
| Tensile Strength (MPa) | NF ISO 37 | 11 |
| Compression Set (%) (70hours - 150°C - 25%) | NF ISO 815-1 | 51 |
| Elongation at Break (%) | NF ISO 37 | 368 |
| Maximum Recommended Operating Temperature (°C) | - | 200°C |
| Low Temperature, Flexibility (°C) | - | -60°C |
These figures are intended as a guide and should not to be considered as specifications. The user must check that these properties are compliant with the application. Configure
We can deliver seals in several options following your requirements include Standard Coils, Cut to Length, Junction, Anti Elongation Strip, Low Friction Coatings, Metal Insert, and self-adhesive (possible) for your bogie or bogie TGV.
Why Saint-Gobain Sealing Solutions
Silicone is a polymer that is combined with hydrogen and carbon. It is used in several industries and applications do to its excellent mechanical properties and performance in harsh environment such as those with high-temperature variations, high pressures and humid atmospheres.
General Properties of Silicone:
- Excellent temperature resistance and environment resistance including ozone, UV radiation, snow and many more
- Light and energy saving
- Non-reactive
- Flame retardant
- Sterile
- Great compression set
- Good tensile strength
- Great abrasion resistance
- Excellent elongation at break and tear resistance
- Low density
- Electrical insulator
- Good friction
- Fluid resistance
- Superior life time
- Variety of color options
- Two plants EN9001 approved (France and Germany)
- Engineers to drive your projects through to the end
- Extensive project management experience, capacity to be very reactive for smaller projects
- Compliant EN45 545
- Customized for your critical applications
- Fast timeline to market
- Multiple colors available
- Multiple hardnesses available
- Extruded or molded
- Several finishing options available
Your Global Partner
Our extensive production capability include a wide ranges of silicone seals products and service locations. With industrial footprints across France and Germany, Saint-Gobain Sealing Solutions provides excellent and timely service and technical support anywhere in Europe as well as extrusion, compression molding, injection molding and reinforced sealing products.
We utilize innovative processes such as Finite Element Analysis (FEA) to anticipate seal behavior and detect potential problems before they occur. We are not only a global seal manufacturer, but your partner in providing ready to use and peace of mind sealing solutions.
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