CSL523 Hi-Temp Non-Corrosive High Strength Silicone Sealant/Adhesive

CSL523 Hi-Temp Non-Corrosive High Strength Silicone Sealant/Adhesive

High heat form-in-place gasketing for industrial and transportation applications.


CSL523 is a one-part, moisture curing RTV (Room Temperature Vulcanizing) silicone sealant that cures to a tough rubber gasket that can be used in corrosion-sensitive applications with no adverse effects.

CSL523 is particularly effective for aviation and aeronautical applications requiring high strength.

CSL523 is designed to maintain maximum performance and remain permanently flexible in a continuous temperature environment of 315°C (600°F) and intermittent exposure of extreme temperatures up to 371°C (700°F).

CSL523 has superior resistance to oils used in mechanical and automotive systems.


  • Extreme temperature performance
  • High strength
  • Superior oil resistance
  • Non-corrosive
  • Superior adhesion and flexibility in extreme environments
  • Excellent hydrophobicity
  • Easy application

CSL523 is used in a wide variety of high temperature automotive and aeronautical environments for sealing and form-in-place gasketing where high strength and superior oil resistance is required. Typical applications include aviation and aerospace sealing and gasketing, variety of automotive sealing and gasketing and photovoltaics and solar panel assembly.


  • Unaffected by extreme temperatures
  • High strength
  • Oil and chemical resistance
  • Resists moisture, vibration, mechanical and thermal shock






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