Silicon Sealant – Flexible Protection for Electronic Assemblies

In electronics manufacturing and SMT assembly, moisture, dust, and environmental stress can compromise device performance. A robust barrier is essential for safeguarding critical components. Enter the Silicon Sealant—a versatile, high-performance product that prevents contaminants from affecting PCB assemblies and enclosures.

Kaasu Enterprises offers premium-grade RTV (Room Temperature Vulcanizing) Silicon Sealant designed to provide lasting protection for your sensitive electronics. Available in both acetoxy and neutral cure formulations, our sealant caters to diverse industrial and environmental needs.

 Technical Details –

Why Choose RTV Silicon Sealant?

Reliable Environmental Barrier

Whether your device is used outdoors or in harsh industrial settings, sealant distributes evenly around gaps and enclosures, forming a flexible yet durable barrier against moisture, dust, and chemicals.

Acetoxy vs. Neutral Cure: Choosing the Right Formula

• Acetoxy Cure: Fast curing, strong adhesion, and slight vinegar odor. Ideal for glass, metal, ceramics, and closed environments.

• Neutral Cure: Low-odor, non-corrosive, and silicone-based. Preferred for electronics due to compatibility with sensitive circuitry and metals.

Key Features That Matter

• Wide Temperature Endurance: Operable from –50°C to +250°C without cracking or losing adhesion.

• Strong Tensile Resistance: Handles stress and vibration effectively, keeping sealed surfaces intact.

• Flexible Movement: Great for PCBs and enclosures where components expand and contract under thermal cycling.

• Electrical Insulation: Electrically resistive—prevents short circuits while maintaining seal integrity.

Typical Applications in SMT & Electronics

Assembly Bonding & Sealing

Used to seal connectors, cable entries, or PCB edges before conformal coating to prevent damage.

Gasketing Between Enclosure Parts

Ideal for sealing seams and joints in plastic or metal housings.

Waterproofing for Outdoor Devices

Perfect for sealing sensors, IoT devices, and automotive electronics subject to exposure.

Vibration Dampening

Sealant provides mechanical support to delicate components, reducing stress during use.

Application Guide & Best Practices

Surface Preparation

Clean surfaces of oil, dust, or flux residues using isopropyl alcohol or acetone.

Choosing Application Method

• Manual extrusion from a cartridge

• Automated dispensing in production lines

• Pressure pot or robotic systems for high precision

Application & Curing

• Maintain a uniform bead thickness (usually 2–5 mm)

• Apply at room temperature with a smooth finish

• Flexibility in cure time based on humidity and temperature

Safety & Handling Recommendations

• Ventilate work area adequately, especially with acetoxy formulations

• Store sealant between 5–25 °C, in a dry environment

• Discard partially cured sealant after opening to prevent degradation

Advantages in Quality Control

• Reduces ingress of moisture, dust, and corrosive agents

• Enhances longevity of electronics by protecting against environmental factors

• Improves assembly durability, reducing returns and warranty claims

• Adds value to your products by ensuring reliable performance

Choosing the Right Sealant Variant

Kaasu Enterprises can help you choose or customize formulation for your specific environment or production conditions.

Sustainability & Environmental Compliance

Our products are formulated:

• Free from heavy metals or hazardous substances

• Compliant with RoHS and REACH standards in electronics manufacturing

• Available in recyclable cartridges to minimize waste

Conclusion:

While often unnoticed, proper sealing is critical to overall product reliability. Kaasu Enterprises’ Silicon Sealant provides:

• Superior platform protection

• High-adhesion, high flexibility under thermal stress

• ESD-safe and electrically insulating properties

• Peace of mind, from small gadgets to industrial systems

Choose a silicon sealant that enhances your electronics with long-lasting protection and improved resilience.