DOWSIL™ 3140 RTV Coating

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DOWSIL™️ SKU: 3140310

Size: 310ml
Colour: Clear
Pack Size: EACH
Sale price£35.95Inc VAT Regular price£49.64Inc VAT

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A high quality, one-part coating designed to provide long term coating against moisture and atmospheric contaminants, especially where a solvent-free RTV product is required.

Dow one-part moisture cure adhesives are generally cured at room temperature and in an environment of 30 to 80 percent relative humidity eliminating the need for curing ovens and the associated costs of energy and capital. Greater than 90 percent of full physical properties should be attained within 24 to 72 hours and varies according to product. Faster manufacturing throughput can be achieved since the adhesive and component can be handled in much shorter times of about 10 to 120 minutes, depending on the adhesive selected and the amount applied. These adhesives are not typically used in highly confined spaces or where a deep section cure is required as they generally cure from the exposed surface inward at a rate of 0.25 inch per seven days. Cure progresses from the outer exposed surface and is dependent on the moisture in the air. Working time is generally a few minutes to an hour for these products until a surface skin begins to form. Mild heat below 60C (140F) may be used to increase through-put by accelerating the cure. Dow adhesives retain their original physical and electrical properties over a broad range of operating conditions which enhance the reliability and service life of devices.


  • Cures at room temperature
  • Stable and flexible from -50C to +200C
  • Excellent dielectric insulating properties
  • Good adhesion to glass, ceramics, metals, silicone rubber and many plastics
  • Ideal for coating of terminations in electronics enclosures, connectors, PCBs and thick film hybrids
  • Good flow-ability
  • UL 94 V-1, IPC-CC-830 and MIL-A-46146 tested


Coating Type Protective
Coating Applications Electrical, Electronics
Sealant Type Silicone RTV


Operating Temperature (min) -65 degrees centigrade
Operating Temperature (max) 200 degrees centigrade
Cure Time 24 Hours
Sealant Applications Electrical, Electronics
Tear Strength 3600 Nm
Dielectric Strength 20 kV/mm

Size 310ml
MPN 1981820
Product Type Silicone Sealants


Pack Size EACH

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