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Is Dow Corning 732 Sealant the Right Choice for Your Sealing Needs?

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Sealants hold a pivotal role across diverse industries and applications, serving as vital safeguards against leaks, environmental challenges, and structural vulnerabilities. Within the realm of sealants, DOWSIL™ 732 Multi-Purpose Sealant emerges as a standout silicone-based solution, renowned for its exceptional versatility and performance. DOWSIL™ 732 Sealant naturally cures through a reaction with airborne moisture, yielding a pliable, robust, and enduring seal. Its remarkable attributes position it as an indispensable asset for addressing sealing demands across a broad spectrum of settings and purposes.

Exploring Dow Corning 732 Sealant

Composition and Description

Dow Corning 732 Sealant stands out as a silicone-based sealing compound celebrated for its outstanding performance. Formulated with a unique blend of silicone polymers, this sealant offers a distinctive array of properties, rendering it a favored choice for sealing tasks. Its composition is meticulously engineered to react with ambient moisture, forming a pliable and robust seal.

Key Attributes and Characteristics

  • Versatility:

Dow Corning 732 Sealant demonstrates remarkable versatility, adhering seamlessly to an extensive array of surfaces, including glass, metal, plastic, and various construction materials. This adaptability makes it a versatile solution for a wide spectrum of applications.

  • Durability:

This sealant boasts exceptional durability, ensuring enduring performance in challenging environments. It maintains its resilience against physical stress, UV exposure, and the effects of weathering, preserving its structural integrity over time.

  • Temperature Resilience:

Dow Corning 732 Sealant exhibits impressive resistance to temperature extremes, confidently withstanding both high and low temperatures without compromising its sealing effectiveness. This resilience guarantees consistent performance even in the harshest conditions.

  • Chemical Resistance:

Notably, it showcases resistance to a diverse range of chemicals, making it a suitable choice for applications where exposure to harsh substances is a concern.

Applications and Common Utilization

Dow Corning 732 Sealant finds extensive utility across various industries and domains. It is commonly employed for:

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  • Sealing gaps and joints in construction and building projects.
  • Ensuring watertight and airtight seals in HVAC systems.
  • Bonding and sealing in automotive manufacturing.
  • Safeguarding electronic components against moisture and contaminants.
  • Mending and sealing glass windows and aquariums.
  • Fulfilling numerous sealing requirements in industrial, commercial, and residential settings.

Advantages of Dow Corning 732 Sealant

Long-lasting Performance

Dow Corning 732 Sealant is synonymous with long-lasting performance. Its exceptional durability ensures that sealed surfaces remain protected and secure over an extended period. This longevity is particularly valuable in applications where reliability and longevity are paramount.

Ease of Application

Applying Dow Corning 732 Sealant is a breeze. It presents as a non-slumping paste that can be effortlessly applied and smoothly tooled or shaped with a wet finger or spatula. This ease of application enhances efficiency and precision in sealing tasks.

Compatibility with Various Materials

This sealant boasts remarkable versatility, forming strong bonds and reliable seals across a broad spectrum of materials. Whether you're working with metal, glass, ceramic, or a multitude of plastics, Dow Corning 732 Sealant exhibits excellent adhesion and compatibility, making it a versatile choice for diverse applications.

Environmental Considerations

In environmentally sensitive applications, Dow Corning 732 Sealant is a responsible choice. It is formulated to be non-corrosive, ensuring the preservation of sensitive materials and substrates. Additionally, its odorless and non-toxic nature makes it a safe option for various applications, including those where human and environmental health is a concern.

These advantages collectively make Dow Corning 732 Sealant an attractive choice for a wide range of sealing needs. Its combination of durability, ease of use, material compatibility, and environmental safety positions it as a dependable solution that meets the demands of diverse industries and applications.

How to Use Dow Corning 732 Sealant

Preparation and Surface Cleaning

Before applying Dow Corning 732 Sealant, proper preparation, and surface cleaning are essential for achieving a secure and effective seal. Follow these steps:

  • Ensure surfaces are clean, dry, and free from dust, debris, and contaminants.
  • Remove any old sealant or adhesive residues.
  • Use a suitable solvent or cleaner to clean the surfaces, if necessary.

Application Methods

Dow Corning 732 Sealant offers flexibility in application methods, allowing you to choose the most suitable approach for your project. Common application methods include:

  • Manual application with a caulking gun for precise control.
  • Extrusion directly from a cartridge for convenience.
  • Spatula or trowel application for specialized projects.
  • Airless or pneumatic dispensing for high-volume applications.

Curing Process

The curing process of Dow Corning 732 Sealant is initiated by exposure to moisture in the air. Here's what to expect during curing:

  • The sealant forms a skin within minutes of application.
  • Full curing typically occurs within 24 hours, depending on temperature and humidity.
  • Ensure the sealant is protected from rain or water exposure during the curing period.
  • Curing time may vary under extreme conditions; consider environmental factors.

Safety Precautions

While Dow Corning 732 Sealant is safe to use, it's important to observe safety precautions:

  • Wear appropriate personal protective equipment, including gloves and eye protection.
  • Ensure adequate ventilation in the workspace.
  • Avoid prolonged skin contact; wash hands thoroughly after use.
  • Keep the sealant out of reach of children.
  • Dispose of used cartridges and applicators according to local regulations.

Tips for Proper Storage and Maintenance

Storage Recommendations:

Proper storage ensures the longevity and effectiveness of Dow Corning 732 Sealant. Follow these storage guidelines:

  • Store in a cool, dry place away from direct sunlight and extreme temperatures.
  • Keep containers tightly sealed when not in use to prevent moisture ingress.
  • Store cartridges and containers upright to maintain product integrity.

Shelf Life Considerations

Dow Corning 732 Sealant has a shelf life, and it's important to monitor this for optimal performance:

  • Check the product's expiration date before use.
  • Use older stock before newer batches to maintain freshness.
  • Discard any expired or compromised sealant.

Maintenance and Reapplication Guidelines

To ensure continued effectiveness, periodic maintenance and reapplication may be necessary:

  • Inspect sealed areas for signs of wear, damage, or deterioration.
  • Address any issues promptly by cleaning and reapplying the sealant as needed.
  • Follow the same preparation and application methods for maintenance work.


Dow Corning 732 Sealant presents a compelling solution for a wide range of sealing needs. With its versatility, durability, and ease of application, it proves to be a reliable choice for diverse industries and applications. Whether you require weather-resistant seals, chemical-resistant bonds, or long-lasting performance, Dow Corning 732 Sealant offers the attributes necessary to meet your sealing requirements. Consider its advantages carefully to determine if it aligns with your specific project needs and make an informed choice for successful sealing outcomes.