In the demanding world of industrial adhesives and sealants, Dowsil™ 7091 stands out for its unique properties, which make it an indispensable product for numerous applications.
If you’re looking for a robust and flexible solution capable of meeting the most stringent technical requirements, this neutral alkoxy silicone adhesive/sealant is the ideal choice.
Dowsil™ 7091: a versatile adhesive/sealant for professionals
Dowsil™ 7091, manufactured by Dow, is designed to deliver exceptional performance in a variety of industrial environments. Its one-component, room-temperature, neutral-curing formula makes it not only easy to apply but also quick to cure.
Key features of Dowsil™ 7091
Dowsil™ 7091 offers a combination of properties designed to meet the needs of professional industrial applications. Below are the key features that distinguish this adhesive and sealant.
- Neutral alkoxy silicone – odorless: Dowsil™ 7091 is a neutral alkoxy silicone, meaning that the byproduct of the reaction is methanol, which is odorless. This makes it more pleasant to handle than acetic silicones, whose reaction byproduct is acetic acid-which has a strong vinegar odor and can cause problems on corrosion-sensitive metals (raw steel, aluminum, copper, etc.).
- Room-temperature curing: curing occurs upon contact with moisture in the air at room temperature, ensuring ease of use on-site.
- Paste-like consistency: its non-sagging consistency allows for precise application, even on vertical or complex surfaces.
- Flexibility and durability: once cured, Dowsil™ 7091 forms a flexible, durable rubber with excellent adhesion to numerous substrates such as aluminum, glass, ceramics, steel, and certain plastics.
- Temperature range: the sealant remains stable and flexible over an extreme temperature range of -40 °C to 180 °C, allowing it to withstand harsh environments and temperature fluctuations.
Technical performance of Dowsil™ 7091
The mechanical properties of Dowsil™ 7091 make it ideal for assemblies and applications requiring high performance:
- Elongation at break: 680%, meaning it can absorb significant deformation without tearing or losing adhesion.
- Tensile strength: with a tensile strength of 2.5 MPa, this adhesive/sealant ensures a durable bond even under harsh conditions.
- Shore A hardness: 37, offering a good balance between stiffness and flexibility.
These technical properties ensure high resistance to thermal shock, particularly in applications where materials with different thermal expansion rates, such as metal and plastic, are bonded together.
Main applications of Dowsil™ 7091
The versatility of Dowsil™ 7091 makes it a perfect solution for many industrial sectors. It is particularly suitable for:
- Bonding materials with different thermal expansion rates: ideal for joining materials such as glass and metal with plastic, without the risk of delamination due to temperature fluctuations.
- Field-In-Place Gaskets (FIPG): used particularly in automotive assembly lines, Dowsil™ 7091 is an excellent solution for creating gaskets directly on-site, ensuring optimal sealing and flexibility.
- Sealing in engine systems: thanks to its ability to withstand high temperatures, this product is often used to ensure sealing and bonding in engines and other industrial equipment subjected to extreme conditions.
The benefits of Dowsil™ 7091
In addition to its exceptional technical characteristics, Dowsil™ 7091 offers numerous practical benefits for professionals:
- Excellent adhesion to a wide variety of substrates: whether metals, ceramics, or certain plastics, Dowsil™ 7091 ensures reliable and long-lasting adhesion.
- Fast curing: with a film-forming time of just 10-15 minutes and no tackiness after 30 minutes, it is perfect for fast-paced production environments.
- Compliance with railway standards: Dowsil™ 7091 is certified according to EN 45545-2, HL1(R22), ensuring optimal safety in railway applications.
In which industries is Dowsil™ 7091 used?
Dowsil™ 7091 is particularly widely used in the following industries:
- Automotive industry: used for field-in-place gaskets (FIPG) and applications requiring high resistance to heat and chemicals.
- Rail industry: compliance with fire safety standards in rail transport.
- Marine sector: sealing portholes and windows, bonding and sealing deck equipment, sealing engine compartments, and securing panels and cladding.
- General industry: ideal for bonding different materials in complex industrial environments.
- Electronics: ensures effective bonding and long-lasting sealing of electronic components.
- Construction: for applications requiring strong adhesion and long-term flexibility in indoor and outdoor environments.
Why choose Dowsil™ 7091 for industrial bonding
Dowsil™ 7091 stands out as the preferred solution among industrial bonding professionals, combining performance, flexibility, and speed of application.
Its ability to adapt to a wide variety of substrates, withstand extreme temperature conditions, and cure rapidly makes it an indispensable product for companies seeking reliable and long-lasting solutions.
Whether you operate in the automotive, electronics, rail, or general industrial sectors, Dowsil™ 7091 offers you an effective technical solution to meet your specific needs.
For more information on the Dowsil™ product line, contact our experts at MD Poland.
