Brand: Insulcast
RTVS A-4000 is a two-component, solvent-based silicone resin adhesive with excellent lap shear and peel strength, even at elevated temperatures. It is designed for bonding silicones, Mylar, metals, and various engineering plastics while maintaining flexibility between -73°C and 260°C. This adhesive is approved for use by the U.S. Army Missile Command and Department of Defense (MIL-A-47317(MI)), making it ideal for high-performance military and industrial applications.
✅ Excellent Lap Shear & Peel Strength: Provides durability at high temperatures (up to 300°F / 149°C).
✅ Solvent-Based Formula: Ensures fast drying and strong adhesion.
✅ Wide Service Temperature Range (-73°C to 260°C): Retains flexibility and adhesion in extreme conditions.
✅ Versatile Bonding: Adheres to silicone, Mylar, metals, and engineering plastics.
✅ Military-Approved (MIL-A-47317(MI)): Meets rigorous defense standards.
🔹 Aerospace & Military Components: Used in aircraft, missiles, and defense systems.
🔹 Electronics & Industrial Equipment: Provides strong adhesion for electrical and mechanical assemblies.
🔹 High-Temperature Bonding: Suitable for applications exposed to extreme heat and thermal cycling.
🔹 Structural Bonding: Ideal for joining engineered plastics and metals.
| Property | Part A | Part B | Mixed | Test Standard |
|---|---|---|---|---|
| Color | Light Straw | Clear | – | Visual |
| Viscosity (cP) | 1,000 – 5,000 | 50 | 900 – 2,500 | ASTM D2393 |
| Specific Gravity | 0.99 | 0.95 | – | – |
| Mix Ratio (by Weight) | 100:3.3 | – | – | – |
| Solvent Content | Toulene | – | – | – |
| Solids Content (%) | 55 | – | – | – |
| Flash Point (°F) | 40 | – | – | – |
| Pot Life (Refrigerated, 25°C) (min) | 24 | – | – | – |
| Property | Value | Test Standard |
|---|---|---|
| Service Temperature Range (°C) | -73 to 260 | – |
| 180° Peel Strength (Mylar to Mylar) (oz/inch) | 36 | – |
| Lap Shear Strength (Mylar to Mylar) (psi) | 130 | ASTM D624 |
| Lap Shear Strength (Silicone to Aluminum) (psi) | 120 | ASTM D624 |
| Property | Value | Test Standard |
|---|---|---|
| Dielectric Strength (V/mil) | 450 | ASTM D149 |
| Cure Method | Time & Temperature |
|---|---|
| Room Temperature Cure | 1 to 4 days at 25°C (77°F) |
| Accelerated Cure | 8 hours at 200°C (392°F) |
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