Fasto SM30 - Silicone Adhesives & Sealants

Fasto SM30 – Solar Grade, Frame Silicone Sealant

Fasto SM30 is a single-component, moisture-curing, neutral-cure RTV silicone sealant designed for long-term sealing and bonding applications where durability, flexibility, and environmental resistance are critical. It is UL-certified, PV-grade, and non-corrosive, making it ideal for demanding industrial and solar applications.

Packaging:
290 kg Drum

25 kg Bucket

600ml Sausage

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Features

  • Neutral Cure & Non-Corrosive
    Safe for metals, electronics, and sensitive components without causing corrosion.
  • Excellent Weather & UV Resistance
    Performs reliably under prolonged exposure to sunlight, rain, ozone, and pollutants.
  • High Flexibility & Elastic Recovery
    Accommodates thermal expansion and contraction caused by temperature extremes.
  • All-Weather Performance
    Maintains sealing integrity in hot, cold, humid, and outdoor environments.
  • Electrical Insulation Properties
    High dielectric strength and volume resistivity for electrical safety.
  • UL & RoHS Compliant
    Suitable for photovoltaic (PV) and electronics-related applications.

Benefits

  • Ensures long service life of sealed joints and assemblies
  • Reduces risk of seal failure due to vibration or thermal cycling
  • Enhances reliability of solar panels and junction boxes
  • Minimizes maintenance and rework costs
  • Ideal for industrial, renewable energy, and OEM applications
Primary Application Sub-Applications Functional Purpose Key Performance Advantage
Solar Panel Bonding & Sealing Module frame bonding, glass-to-frame sealing, backsheet sealing Structural bonding & environmental sealing PV-grade, high flexibility, excellent weather resistance
Junction Box (JB) Sealing Sealing of solar panel JBs, electrical connection housings Prevent moisture ingress & corrosion Non-corrosive, high dielectric strength
Outdoor Electronics Sealing Weather-exposed electronic enclosures, control boxes Long-term environmental protection UV, ozone & moisture resistance
Aluminium, Glass & Plastic Bonding Aluminium frames, glass panels, engineering plastics Secure bonding of dissimilar substrates Strong adhesion, flexible cured seal
Expansion & Contraction Joint Sealing Joints exposed to thermal movement Absorbs movement without cracking High elongation, resilient elasticity
Vibration-Resistant Sealing Assemblies exposed to mechanical movement Maintains seal integrity under vibration Highly flexible, durable seal
Electrical Insulation & Protection Electrically sensitive joints & interfaces Enhances electrical safety High volume resistivity & insulation

Surface Preparation

  • Ensure surfaces are clean, dry, and free from dust, grease, oil, rust, or loose particles.
  • Clean surfaces using a suitable Fasto cleaner for optimal adhesion.

Application Method

  1. Apply Fasto SM30 using a manual or pneumatic dispensing gun.
  2. Extrude a continuous, bubble-free bead with consistent pressure.
  3. Assemble or tool the joint immediately before skin formation.
  4. Remove excess sealant using a suitable cleaner.
  5. For neat joints, use masking tape and remove it before skinning occurs.

Joint Design Guidelines

  • Suitable for gap filling up to 7 mm
  • For joints wider than 7 mm, use a backer rod or bond breaker tape
  • Avoid fully confined joints, as curing requires atmospheric moisture

Curing Information

  • Skin formation: approx. 8 minutes
  • Full cure: 24 hours (depends on humidity, temperature, and joint depth)

To access Technical & Safety Documents, please submit your details.

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