CX-3391 Silicone Adhesive Sealant For Electronics

CX-3391 silicone adhesive sealant is a One-component RTV silicone rubber, dealcoholized curing, high performing silicone agent.It offers excellent primerless adhesive to many subtrates, and has resistance to low-and high-temperature. It is stable and flexible from -40°C to 180°C and capable of withstanding extreme temperatures while maintaining an effective bond. It is intended to have a flexible tough adhesion to a variety of substrates, and also capable of unprimed bonding to used materials including aluminum, ceramic, glass, ABS, PBT, PET, PVC and PC.It is widely used for adhesion to lights, household appliances and electronic component, etc.

Silicone adhesive sealant offers strong but flexible adhesives to auto lights.


  • One-component adhesive, dealcoholized curing, no odor after full curing.
  • Excellent primerless adhesive to many substrates (for glass, aluminum, ceramics, ABS, PBT, PET, PVC and PC).
  • Strong and flexible adhesion.
  • Superior resistance to low-and high-temperature. Stable and flexible from -40°C (-40°F) to 180°C (356°F).
  • Low volatile organic compounds.
  • Easy to use.






Non-slump past



Black, white, gray

Specific gravity(25℃)




Shore A


Extrusion rate



Tack-free time



Tensile strength


≥ 1.8

Elongation at break


≥ 350

Volume resistivity


≥3.5 X 1014

Dielectric strength



The values presented are typical values and should not be used for specification purposes.




Adhesion to glass

Adhesion to aluminum

Adhesion to plastics

  • Adhesion and seal to lamps such as energy-saving lights, automobile lights and panel light, etc.
  • Unprimed adhesion to commonly used materials including glass, aluminum, and engineering plastics, e.g. induction cooker, household appliances, kitchen ventilator.
  • Various adhesive and seal application in other industries.
  • Designed for applications which demand a strong but flexible bond, such as when bonding materials with different thermal expansion rates, e.g. adhesion of glass to metal or glass to plastic.

How to Use Silicoen Adhesive  Sealant 

  1. CX-3391 silicone adhesive sealant should be used over a temperature of 4°C to 40°C and relative humidity of 40% to 80%.
  2. All surfaces must be clean and dry. Degrease and wash off any contaminants that could impair adhesion. Suitable solvents include isopropyl alcohol, acetone or methyl ethyl ketone.
  3. Apply CX-3391 silicone adhesive sealant to one of the prepared surfaces, then quickly cover with the other substrate to be bonded.
  4. On exposure to moisture, the freshly applied material will “skin-over” in about 10–15 minutes at room temperature and 50% relative humidity. Any tooling should be completed before this skin forms. The surface is easily tooled with a spatula.



Started in 1974, Trancy is a leader in silicone and solutions, committed to exploring and developing the applications of silicone materials. With more than 40 years of silicone R&D and manufacturing experience, Trancy provides more than 2000 silicone products and is able to produce tailor-made products based on your special demands.

Trancy Personal Care Business Unit

Trancy personal care R&D center specializes in researching, developing and testing new silicone products for personal care and improving their performance. Our newest silicone technologies are available for the formulation of innovative skin care products.
Trancy has developed cyclic, linear, or organo-functional polydimethylsiloxane, silicone elastomer and resins, delivering superior aesthetics and unmatched, cost-effective, sensory benefits for the formulator with endless possibilities.

Product Manager :

Mr.Yu +86 177 2766 2733

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