Momentive RTV664-J - Two-Component Addition-Cure High-Hardness, High-Strength, High-Temperature Mold Silicone rubber
Two‑part platinum‑cured silicone rubber system, mixed 10:1, cures to a tough elastomer with low shrinkage.
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PRODUCTS DESCRIPTION
Products parameters
| Base Compound: | RTV664A-J |
| Appearance: | White-Beige |
| Viscosity (23°C) Pa·s {P}: | 150 {1,500} |
| Curing Agent: | RTV664B-J |
| Appearance: | Blue |
| Mix Ratio Wt %: | 10 |
| Work Life (25°C) H: | 2.0 |
| Demold Time (25°C) H: | 24 |
Key features
Excellent dimensional stability
Excellent release characteristics
Low shrinkage (room temperature cure)
High strength
Application
Industrial tooling — dimensionally stable molds for production.
Arts & crafts — casting decorative items.
Architectural interiors — mold replication for design elements.
Button/keypad molding — durable elastomer for electronics.
Prototype casting — low shrinkage for accurate models.