DOWSIL™ 3140 RTV Translucent Silicone Sealant – 90 mL (3 oz) Tube
DOWSIL 3140 RTV by DOWSIL (Dow Corning) is a professional-grade rtv-1 silicone sealant available in 90 mL (3 oz) Tube format. It is designed for use on Electronics, PCB, Glass, Metal, Plastic surfaces, delivering long-lasting adhesion, flexibility, and environmental resistance across a wide range of industrial, commercial, and specialized applications. Translucent in color, this product is trusted by maintenance professionals, OEM manufacturers, and engineers worldwide who demand consistent, specification-grade silicone performance in every application.
| Attribute | Detail |
|---|---|
| Manufacturer Part Number (MPN) | 1665341 |
| Brand | DOWSIL (Dow Corning) |
| Product / Model Name | DOWSIL 3140 RTV |
| Color | Translucent |
| Package Size | 90 mL (3 oz) Tube |
| Product Type | RTV-1 Silicone Sealant |
| Specification | N/A |
| Compatible Substrates | Electronics, PCB, Glass, Metal, Plastic |
Technical Information
DOWSIL 3140 RTV is a one-part, moisture-cure acetoxy silicone sealant engineered specifically for the protection and encapsulation of sensitive electronic assemblies. Upon exposure to atmospheric moisture, it vulcanizes at room temperature to form a stable, flexible silicone rubber that maintains its properties across a broad temperature range from -65°C to +204°C. The cured elastomer exhibits excellent dielectric strength, low ionic content, and resistance to moisture ingress, making it an industry-standard choice for conformal coating, potting, and connector sealing in demanding electronic environments. Its translucent cure allows post-application visual inspection of sealed components without requiring disassembly.
Why Choose DOWSIL 3140 RTV?
- ✅ Electronics-Safe Formula — Low ionic content — safe on PCBs and sensitive components
- ✅ Moisture-Cure Convenience — One-part — no mixing required, ready to use straight from tube
- ✅ Translucent Cure — Inspect sealed components without removing the sealant
- ✅ Broad Temperature Range — -65°C to +204°C continuous service after full cure
- ✅ UV & Ozone Resistant — Suitable for indoor and outdoor electronic protection
Frequently Asked Questions
Q: What is DOWSIL 3140 RTV Silicone used for?
A: DOWSIL 3140 is a one-part, moisture-curing RTV silicone sealant used for encapsulating and protecting electronic assemblies, PCBs, sensors, and connectors against moisture, dust, and vibration.
Q: What is the MPN for DOWSIL 3140 90 mL tube?
A: The Manufacturer Part Number (MPN) is 1665341.
Q: Is DOWSIL 3140 suitable for outdoor use?
A: Yes. DOWSIL 3140 cures to a flexible, weather-resistant silicone rubber with excellent UV and ozone resistance, making it suitable for both indoor and outdoor electronic protection applications.
Q: What color does DOWSIL 3140 cure to?
A: DOWSIL 3140 cures to a translucent silicone rubber, allowing visual inspection of the encapsulated components after curing.
Q: How does DOWSIL 3140 cure?
A: DOWSIL 3140 is a one-part RTV (Room Temperature Vulcanizing) silicone that cures upon exposure to atmospheric moisture. No mixing is required — simply dispense from the tube and allow to cure at ambient conditions.
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