Fasto S970 - Silicone Sealant - Industrial Grade,

Fasto S970 – Neutral Cure Industrial Grade RTV Silicone Sealant

Fasto S970 is a one-part, all-weather, highly flexible, neutral cure RTV silicone sealant designed for industrial sealing, bonding, and glazing applications. Its non-corrosive formulation ensures compatibility with sensitive substrates including galvanized steel, zinc-coated metals, aluminum, concrete, composites, and electrical components.

Packaging:

Drum : 200kg

Bucket : 20kg

Cartridge : 280ml

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Key Features

  • One-Part Neutral Cure System
    Moisture curing, easy to apply, no mixing required.
  • Non-Corrosive Formulation
    Safe for zinc, galvanized steel, aluminum, and electrical components.
  • High Flexibility & Elongation (~400%)
    Absorbs vibration and accommodates joint movement.
  • Excellent Environmental Resistance
    Resistant to UV, ozone, moisture, detergents, and temperature extremes.
  • Wide Service Temperature Range
    Performs reliably from -24°C to 175°C.
  • Weather & Vibration Resistant
    Ideal for dynamic industrial applications.

 

Benefits

  • Long-term durability in harsh outdoor conditions
  • Prevents corrosion and surface degradation
  • Maintains seal integrity under vibration and thermal stress
  • Suitable for electrical, automotive, and construction sectors
  • Enhances equipment reliability and structural sealing
Primary Application Sub-Applications Functional Purpose Key Performance Advantage
Gearbox & Flange Sealing Gearbox housings, mechanical flanges Leak-proof sealing Vibration resistant, flexible bond
HVAC & Duct Sealing Air conditioning ducts, ventilation systems Air & moisture sealing UV & temperature resistant
Solar Panel Sealing Solar modules, insulators Weatherproof sealing Non-corrosive, outdoor durable
Electrical Equipment Sealing Street lights, signing boards, panels Moisture & dust protection Safe for electrical assemblies
Automotive Body Sealing Bus body joints, structural panels Joint flexibility & sealing High elongation & impact resistance
Construction Glazing Glass, aluminum frames, concrete joints Structural & glazing seal Strong adhesion, weather resistant

Surface Preparation

  • Remove rust, dust, oil, grease, release agents, and contaminants.

  • Clean surfaces using suitable Fasto cleaner if required.

  • Ensure surfaces are dry and structurally sound before application.

 

 

Application Method

  1. Apply Fasto S970 using a standard cartridge gun or suitable dispensing equipment.
  2. Assemble parts immediately to avoid skin formation before bonding.
  3. Apply sufficient quantity to ensure complete sealing.
  4. Remove excess material using appropriate tooling methods.

 

Curing Information

  • Skin Over Time: 15–25 minutes*
  • Tack Free Time: 25–35 minutes*
  • Full Cure: 24 hours*
  • Hardness: Shore A ~24
  • Operating Temperature: -24°C to 175°C

 

Joint & Sealing Guidelines

  • Ensure joints are clean and free from oil or contamination.
  • For large construction joints, use backer rod or bond breaker tape.
  • Apply masking tape for neat finishing and remove before skin formation.
  • Not suitable for continuously submerged applications.
  • Avoid application on frost-laden or wet surfaces

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








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