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DOW® DOWSIL™ 839 Silicone Adhesive Sealant

DOW® DOWSIL™ 839 Silicone Adhesive Sealant

This one part, moisture cure (RTV) translucent blue general purpose sealant/adhesive is solvent free and requires no mixing. Cure system can be heat accelerable for faster in-line processing. Non-flow after dispensing process.


  • Sealing openings in modules and housings
  • Adding mechanical stability to individual components
  • Assembly of components on PWBs
  • Sealing in and around wired and electrical leads
  • Yoke assembly

Non-corrosive, one- or two-part moisture curing RTV silicone elastomers; cure at room temperature without the need for heat.

Physical Form
Non-flowing; cures to a flexible elastomer.

Special Properties
Room temperature cure; resists humidity and other harsh environments; good dielectric properties; good adhesion to a variety of common substrates; low stress, low volatility.

Potential Uses
Sealing modules and housings; gasketing; sealing of electronic equipment and modules; part fixing on circuit boards of power supply and CRT, LCD/LED/PDP module assembly; attaching electronic parts.

DOW® 3138496 DOWSIL™ 839 Blue Silicone Adhesive Sealant - 305 mL (10.3 oz) TubeView DetailsEnable JS
Part Number
305 mL (10.3 oz) Tube
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Material Safety Data Sheet:
Country of Origin: United States
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