In industries where durability, flexibility, and environmental resistance are critical, RTV silicone sealant has become a preferred choice for sealing and bonding applications. From construction and solar panels to electronics and cleanroom environments, RTV silicone sealants deliver Long-lasting, High-Performance results.
At Fasto Adhesives, we offer a specialized range of RTV silicone sealants engineered for demanding industrial applications, ensuring reliability, efficiency, and superior performance.
What is RTV Silicone Sealant?
RTV stands for Room Temperature Vulcanizing, meaning the sealant cures at room temperature without requiring heat or special equipment.
RTV silicone sealants are flexible, moisture-curing compounds that form a durable rubber-like material upon curing, making them ideal for both sealing and bonding.
Key Properties of RTV Silicone Sealants
- Excellent temperature resistance (-50°C to +250°C)
- Superior UV and weather resistance
- High flexibility and elasticity
- Strong adhesion to multiple substrates
- Outstanding waterproofing capability
Excellent electrical insulation properties
Types of RTV Silicone Sealants
1. Neutral Cure RTV Silicone
- Non-corrosive and low odor
- Suitable for metals, electronics, and sensitive substrates
- Ideal for solar and industrial applications
2. Acetoxy Cure RTV Silicone
- Fast curing with strong adhesion
- Best suited for glass and ceramic surfaces
- Commonly used in general construction
3. High-Temperature RTV Silicone
- Designed for extreme heat conditions
- Used in automotive, industrial, and machinery applications
4. Electronic Grade RTV Silicone
- Used for potting and encapsulation
- Protects components from moisture, dust, and vibration
Applications of RTV Silicone Sealants
- Sealing solar modules and junction boxes
- UV-resistant bonding for outdoor applications
- Long-term durability in harsh climates
- Potting LED drivers and circuits
- Electrical insulation and thermal stability
- Protection against moisture and environmental damage
3. Construction & Infrastructure
- Expansion joints and glazing
- Waterproof sealing for façades and structures
- Weatherproofing applications
- Sealing insulated panels
- Preventing air leakage
- Maintaining temperature efficiency
- Hygienic sealing in pharmaceutical and food industries
- Resistance to chemicals and contamination
Advantages of RTV Silicone Sealants
✔ Long-lasting performance without cracking or shrinking
✔ Maintains flexibility under movement and stress
✔ Excellent resistance to extreme environmental conditions
✔ Easy to apply and cures at room temperature
✔ Suitable for a wide range of industrial applications
How to Choose the Right RTV Silicone Sealant
When selecting an RTV silicone sealant, consider:
Factor | Recommendation |
Substrate Type | Use neutral cure for metals, acetoxy for glass |
Environment | Choose weatherproof for outdoor use |
Temperature | Use high-temp RTV for extreme heat |
Application | Use electronic grade for circuits and potting |
Application Guidelines
1. Surface Preparation
- Clean and dry the surface
- Remove dust, grease, and contaminants
2. Application
- Apply evenly using a sealant gun
- Ensure proper coverage
3. Curing
- Allow sealant to cure at room temperature
- Avoid disturbance during curing
Why Choose Fasto RTV Silicone Sealants?
At Fasto Adhesives, our RTV silicone sealants are engineered for performance, reliability, and industry-specific applications.
Our Key Strengths:
- Advanced formulations for industrial use
- Consistent quality and performance
- Strong adhesion across multiple substrates
- Technical support for product selection
RTV Silicone Sealants are essential for industries that demand durability, flexibility, and long-term performance. Whether it’s solar panels, electronics, construction, or cleanroom environments, choosing the right sealant ensures efficiency and reliability.
Fasto Adhesives delivers high-performance RTV silicone solutions designed to meet modern industrial challenges.



