Fasto S960 – Industrial Grade, High Temperature Silicone Sealant

Fasto S960 is a one-part, high-performance, acetoxy-cure RTV silicone sealant designed for high-temperature sealing, bonding, and glazing applications. With excellent flexibility and outstanding thermal resistance, it is ideal for electrical, mechanical, and automotive assemblies exposed to continuous and intermittent high heat.

Packaging:

290 kg Drum

25 kg Bucket

280 ml Cartridge

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Key Features

  • High Temperature Resistance
    Performs reliably from -24°C to 304°C (continuous) and up to 325°C (intermittent).
  • Single-Component, Ready-to-Use RTV Silicone
    Easy application without mixing.
  • Highly Flexible & Elastic
    Accommodates vibration, joint movement, and thermal expansion.
  • Strong Mechanical Performance
    High tensile strength with excellent elongation.
  • Good Electrical Insulation Properties
    High dielectric strength and stable dielectric constant.
  • Distinct Red Color
    Ideal for identifying high-temperature sealing points.

Benefits

  • Ensures durable sealing in high-heat environments
  • Reduces leakage, gasket failure, and maintenance downtime
  • Maintains joint integrity under thermal cycling
  • Suitable for automotive, industrial, and electrical equipment
  • Provides long service life in demanding conditions
Primary Application Sub-Applications Functional Purpose Key Performance Advantage
High-Temperature Flange Sealing Gearbox flanges, pipe flanges Reliable sealing under extreme heat Continuous high-temperature resistance, flexible seal
Boiler, Radiator & Heat Equipment Sealing Boiler joints, radiators, heating equipment Leak prevention in thermal systems Maintains seal integrity at elevated temperatures
HVAC & Air Duct Sealing Air-conditioning ducts, ventilation joints Airtight sealing in heated airflow systems Flexible, quick skin formation
Insulation & Thermal System Sealing Insulation joints, thermal enclosures Prevent heat loss & air leakage High elongation, durable elasticity
Refrigeration & Cooling Unit Sealing Refrigeration units, cooling assemblies Reliable sealing across temperature cycles Stable performance under thermal variation
Solar Panel & Outdoor Equipment Sealing Solar panel assemblies, outdoor fixtures Environmental & heat resistance Weather resistant, electrically safe
Gasket & O-Ring Replacement Sealing Static gaskets, O-ring grooves Forms in-place flexible seals High elongation, non-slumping application
Multi-Substrate Bonding & Sealing Metal, composites, glass, plastics, rubber Secure adhesion across different materials Broad substrate compatibility

Surface Preparation

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

Application Method

  1. Apply Fasto S960 using a manual or pneumatic dispensing gun.
  2. Extrude a continuous, uniform bead onto the prepared surface.
  3. Assemble the mating parts immediately to avoid premature skin formation.
  4. Apply sufficient sealant to ensure proper sealing.
  5. Remove excess material after assembly, if required.

Curing Information

  • Skin formation: 8–10 minutes
  • Tack-free time: 18–22 minutes
  • Full cure: 24 hours
    (Cure time depends on humidity, temperature, and joint thickness)

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