Product Introduction
Momentive SILTRUST™ RTV664 is a high-durometer, two-part platinum-cure silicone rubber compound designed for mold-making applications requiring excellent dimensional stability, abrasion resistance, and long work life. As part of the RTV600 mold-making series, RTV664 provides superior tear strength and durability, making it well-suited for repeated casting operations and demanding production environments. Its low shrinkage and high mechanical strength ensure consistent replication of intricate details.
Momentive SILTRUST™ RTV664 Features
- High durometer (62 Shore A) for excellent dimensional stability
- Long work life suitable for large or complex mold fabrication
- High tear strength and abrasion resistance for extended mold life
- Low shrinkage during room temperature cure
- Part of the RTV600 series offering strong mechanical performance
- Platinum-cured system with stable, consistent properties
- Service temperature range from -60°C to 200°C (-75°F to 392°F)
- Excellent detail reproduction for architectural, furniture, or prototype molds
Momentive SILTRUST™ RTV664 Applications
- Architectural molding and restoration
- Furniture and decorative component mold-making
- Prototyping and pattern replication
- High-production molding operations requiring durability
- Casting materials that demand high dimensional accuracy
- Applications where long work life supports large-scale mold fabrication
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
| Property | Value |
|---|---|
| Product | SILTRUST™ RTV664 Mold-Making Silicone |
| Base (RTV664A) color | Beige |
| Base (RTV664A) viscosity, cps | 153,000 |
| Base (RTV664A) specific gravity | 1.28 |
| Catalyst (RTV664B) color | Blue |
| Catalyst (RTV664B) viscosity, cps | 6,000 |
| Catalyst (RTV664B) specific gravity | 1.05 |
| Mix ratio, base:catalyst (wt:wt) | 10:1 |
| Catalyzed viscosity, cps | 120,000 |
| Worklife, hours | 2 |
| Potlife, hours | 3 |
| Demold time, hours | 18 |
| Shore A hardness (36 hours) | 62 |
| Tensile strength, psi | 933 |
| Elongation, % | 245 |
| Tear strength, ppi | 122 |
| Service temperature, °C (°F) | -60 to 200 (−75 to 392) |
| Linear shrinkage, % | < 0.2 |
| Typical Cure Condition | 24 hours at 25°C (room temperature); faster with elevated temperature |
