Fasto Redisil GP pro - Silicone Adhesives & Sealants

Fasto Redisil GP – Commercial Grade, Weather RTV Silicone Sealant

Fasto Redisil GP is a one-part, acetoxy-cure, multipurpose RTV silicone sealant designed for general sealing, bonding, and glazing applications. Its high flexibility, all-weather performance, and economical formulation make it suitable for electrical, mechanical, automotive, and construction uses where reliable sealing is required at scale.

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Key Features

  • Single-Component, Ready-to-Use RTV Silicone
    Easy application without mixing.
  • Highly Flexible & Elastic
    Accommodates joint movement and vibration.
  • All-Weather Performance
    Performs reliably in indoor and outdoor environments.
  • Multipurpose & Economical Grade
    Ideal for large-volume maintenance and construction use.
  • Wide Substrate Compatibility
    Bonds well with steel, aluminium, glass, plastics, rubber, composites, and concrete.
  • Multiple Colour Options
    Available in clear, white, and black for functional and aesthetic needs.

Benefits

  • Provides durable sealing for everyday industrial and construction applications
  • Reduces air, dust, and moisture ingress
  • Suitable for both new installations and maintenance work
  • Cost-effective solution for high-coverage sealing requirements
  • Ensures clean, flexible, and long-lasting joints
Primary Application Sub-Applications Functional Purpose Key Performance Advantage
HVAC & Air Duct Sealing Air-conditioning ducts, ventilation joints Airtight sealing and vibration absorption Highly flexible, easy application
Automotive Body & Assembly Sealing Bus body joints, vehicle assemblies Joint sealing with movement accommodation High elongation, durable elasticity
Outdoor Utility & Fixture Sealing Street lights, outdoor electrical fixtures Weather and environmental protection All-weather performance
Construction Joint Sealing Expansion joints, general construction joints Sealing joints subjected to movement Economical multipurpose sealing
Window, Roof & Façade Sealing Windows, roofs, façade interfaces Weatherproof joint sealing & glazing Good adhesion, flexible cured seal
General Mechanical & Electrical Sealing Electrical enclosures, mechanical housings Dust & moisture protection Reliable sealing on mixed substrates
Multi-Substrate Bonding & Sealing Steel, aluminium, composites, glass, plastics, rubber, concrete Bonding and sealing across different materials Broad substrate compatibility

Surface Preparation

  • Ensure surfaces are clean, dry, and free from dust, grease, oil, rust, scale, and contaminants.
  • Clean surfaces using a suitable Fasto cleaner to improve adhesion.

Application Method

  1. Apply Fasto Redisil GP using a manual or pneumatic dispensing gun.
  2. Extrude a continuous and uniform bead onto the prepared surface.
  3. Assemble or tool joints immediately to avoid premature skin formation.
  4. Apply sufficient sealant to ensure complete sealing.
  5. Remove excess sealant after tooling, if required.

Construction Joint Sealing

  • Ensure joint surfaces are sound and contaminant-free.
  • For larger joints, use a backer rod or bond breaker tape.
  • Use masking tape for neat joints and remove it before skinning occurs.

Curing Information

  • Skin formation: ~10 minutes
  • Tack-free time: 15–20 minutes
  • Full cure: 24 hours
    (Curing time depends on temperature, humidity, and joint thickness)

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

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