Key Points
- Silicone adhesive sealants are essential materials for ensuring protection, durability, and reliability in electronics, automotive, and especially in the aerospace sector.
- The DOWSIL™ 3145 RTV Mil-A-46146 is a reference solution for sealing and protection in aeronautical and defense applications, thanks to its resistance and compliance with MIL-SPEC requirements.
- Products such as DOWSIL™ 844 RTV and DOWSIL™ EA-7300 complete the range by offering specific solutions for electronic modules, in-place gaskets, and advanced automotive electronics.
- DOWSIL™ technologies are developed to meet the needs of thermal stability, adhesion to various materials, and efficient production processes.
- The continuous evolution of DOWSIL™ sealing silicones supports the creation of advanced and reliable systems, contributing to technological development in the most demanding sectors of the industry.
For over sixty years, DOWSIL™ technologies have represented a standard in the world of adhesive sealants, thanks to materials designed to ensure durability, flexibility, and reliability even in the most extreme operating conditions.
Among these, a central role is played by RTV silicone adhesive sealants, solutions that cure at room temperature and offer stable adhesion on multiple substrates.
Silicone adhesive sealants are now used in several key sectors: electronics, automotive, and aerospace, the latter representing one of the most technically challenging areas where RTV silicones demonstrate their full potential.
Index
- The advantages of adhesive sealants in industrial applications
- Applications of adhesive sealants in various industrial sectors
- DOWSIL™ 3145 RTV Mil-A-46146: RTV sealant for aerospace applications
- DOWSIL™ 844 RTV: adhesive sealant for modules and in-place gaskets
- DOWSIL™ EA-7300: silicone adhesive for automotive electronics
- The evolution of DOWSIL™ technologies
- The value of DOWSIL™ adhesive sealants
The advantages of adhesive sealants in industrial applications
Silicone adhesive sealants for electronics contribute to the protection and stability of critical components, enabling the development of safer, more durable, and reliable systems.
With properties such as high flexibility, resistance to thermal stress, and long-lasting adhesion, these materials are chosen for applications that require precision, robustness, and operational continuity.
Applications of adhesive sealants in various industrial sectors
Silicone adhesive sealants are used in a wide variety of industrial sectors due to their ability to ensure protection, stability, and reliability in complex operating conditions.
From the extreme stresses of aerospace to the miniaturization requirements of electronics, to the high temperatures of electric automotive, these materials allow sealing, protecting, and stabilizing sensitive components, ensuring operational continuity and consistent performance over time.
Aerospace and defense sector
The aerospace sector represents one of the most challenging environments from an engineering perspective. Here, RTV silicone adhesive sealants are used to protect components exposed to high mechanical stress, extreme thermal conditions, and long operational cycles.
DOWSIL™ silicones are designed to meet:
- rigorous outgassing standards, essential for space and satellite applications;
- high thermal stability;
- resistance to vibrations and shock, typical of aeronautical systems.
Typical applications of RTV silicone adhesive sealants in the aerospace sector include:
- satellite electronics;
- aeronautical electronic modules;
- critical control units;
- sealing of wiring and housings.
DOWSIL™ 3145 RTV Mil-A-46146 is one of the most widely used materials in these contexts due to its adhesion properties, resistance, and compliance with specifications required in the defense and aerospace sector.
Electronics
In the electronics sector, silicone adhesives and sealants provide protection against moisture, vibrations, and contaminants, contributing to circuit stability and long-term durability.
Applications include:
- printed circuit boards (PCBs);
- electronic modules;
- housings and covers;
- power components.
Silicone sealants support the integrity of electronic systems even in cases of thermal shock or rapid temperature variations.
Automotive and electric automotive
In the world of automotive, particularly e-mobility, the growing presence of complex electronic modules requires adhesive sealants capable of withstanding high temperatures, vibrations, and intense thermal cycles.
Some of the applications of these products in the automotive sector include:
- battery packs;
- EV controllers;
- on-board chargers;
- ADAS modules;
- inverters and converters;
- sensors and control units.
In this sector, both RTVs, such as DOWSIL™ 844 RTV, and non-RTV silicone adhesives, like DOWSIL™ EA-7300, are used, designed for under-hood applications and automotive electronic systems.
DOWSIL™ 3145 RTV Mil-A-46146: RTV sealant for aerospace applications
DOWSIL™ 3145 RTV Mil-A-46146 is a one-component RTV silicone adhesive/sealant, non-slumping and high-strength. Room temperature curing makes it particularly suitable for rapid and repeatable processes.
Applications
- sealing openings in modules and housings;
- mechanical stabilization of components;
- assembly of components on PWBs;
- sealing around cables and conductors.
Properties
- high thermal stability;
- resistance to tensile stress and elongation;
- long-lasting adhesion on electronic components;
- paste-like and non-slumping consistency;
- room temperature curing.
It also complies with MIL-SPEC requirements, an essential element for aerospace and defense applications.
DOWSIL™ 844 RTV: adhesive sealant for modules and in-place gaskets
DOWSIL™ 844 RTV is a fast-curing one-component RTV sealant, suitable for automated and manual dispensing systems.
Applications
- bonding and sealing of modules;
- creation of gaskets directly in place.
Properties
- non-slumping;
- fast curing at room temperature;
- ability to reduce stress due to high elongation;
- stable adhesion on numerous substrates.
DOWSIL™ EA-7300: silicone adhesive for automotive electronics
DOWSIL™ EA-7300, while not belonging to the RTV family, is a thixotropic one-component silicone adhesive, designed for automotive electronic applications and ADAS systems.
Applications
- battery packs;
- EV controllers;
- on-board chargers;
- inverters and converters;
- ADAS sensors and modules;
- electronic control units.
Properties
- solvent-free;
- heat-accelerated curing;
- adhesion to metals and engineering plastics;
- high thermal and mechanical resistance;
- low modulus to reduce stress on components.
The evolution of DOWSIL™ technologies
DOWSIL™ technologies have evolved to support:
- faster production processes;
- more sustainable materials;
- greater design freedom.
Whether it’s enhancing the safety of electric vehicles, protecting in extreme environments, or increasing the reliability of consumer electronics, DOWSIL™ silicone sealant adhesives play a central role in industrial innovations.
The value of DOWSIL™ adhesive sealants
The sealant adhesives offer reliable solutions for electronics, automotive, and especially the aerospace sector, where stability, robustness, and regulatory compliance are required at every level.
Materials such as DOWSIL™ 3145 RTV, DOWSIL™ 844 RTV, and DOWSIL™ EA-7300 represent safe and established technologies for sealing, protecting, and enhancing the performance of the most critical systems.
For dedicated advice and to identify the most suitable sealant adhesive for your application, contact the Mascherpa experts.
