Applications

RTVS A-4000

Brand: Insulcast

Package Sizes: Contact us for details.

Shelf Life: 6 months

Product Description:

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.


Key Features:

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.


Recommended Applications:

🔹 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.

Uncured Properties (@ 25°C)

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

Cured Properties (@ 25°C)

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

Electrical Properties (@ 25°C)

Property Value Test Standard
Dielectric Strength (V/mil) 450 ASTM D149

Cure Schedule:

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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