Two-Component (RTV-2) Silicone Rubber
Silico® RTV-2 is a high-performance, two-part silicone rubber offering excellent strength, stability, and heat resistance. Available in platinum or tin cure types, it’s ideal for electronics, molds, and industrial use.
Product Overview
Silico® RTV-2 is a premium-grade, two-component, room-temperature vulcanizing silicone rubber engineered for superior mechanical strength, dimensional stability, and thermal resistance. Featuring both platinum addition and tin-catalyzed condensation curing options, this versatile elastomer caters to demanding applications across electronics, automotive, aerospace, mold making, and industrial sealing sectors.
Key Technical Specifications
| Property | Typical Range | Test Method |
|---|---|---|
| Mix Ratio (A:B) | 10:1 to 1:1 (by weight) | Internal Spec |
| Viscosity | 15,000 – 150,000 cP | ASTM D2196 |
| Shore A Hardness | 15 – 40 | ASTM D2240 |
| Tensile Strength | 1.5 – 8 MPa | ASTM D412 |
| Elongation at Break | 150% – 700% | ASTM D412 |
| Tear Strength | ≥15 kN/m | ASTM D624 |
| Thermal Range | –80 °C to +250 °C (up to 300 °C short term) | Internal |
| Linear Shrinkage | ≤0.3% | ASTM D2566 |
| Dielectric Strength | ≥20 kV/mm | ASTM D149 |
Key Features & Technical Benefits
Precision Mix Ratio Control
Exact formulation by combining base polymer and curing agent allows customizable pot life, hardness, and viscosity to suit specific processing requirements.Wide Range of Viscosities and Hardness
Available from soft to medium Shore A hardness (15–40), with liquid, paste, and foam variants supporting injection molding, casting, and coating processes.Exceptional Thermal Stability
Operates reliably in temperatures ranging from –80 °C to +250 °C, with select high-temperature grades tolerating short-term exposure up to 300 °C.Low Shrinkage and High Tear Resistance
Minimal volumetric shrinkage (<0.3%) ensures precise mold reproduction and dimensional accuracy; tear strength typically ranges from 15 to 30 kN/m.Versatile Curing Systems
Platinum Addition Cure: Offers no by-products, excellent for sensitive electronics and medical-grade applications.
Tin Condensation Cure: Economical option with reliable curing, suitable for general industrial use.
Outstanding Environmental Resistance
Exceptional durability against UV radiation, ozone, moisture, and chemical exposure, maintaining performance in harsh outdoor and industrial conditions.
Typical Applications
Electronics & Electrical: Potting, encapsulation, connector sealing, EMI/RFI shielding
Automotive & Aerospace: Engine and sensor seals, fuel line gaskets, wire harness coatings
Mold Making & Prototyping: High-fidelity molds for resins, foams, metals, and composites
Industrial Sealing: Durable gaskets and vibration isolators for harsh environments
Why Choose Silico® RTV-2 Silicone Rubber?
Precise control over cure parameters for customized processing
Superior mechanical and thermal stability for demanding applications
Multiple curing chemistries to suit sensitive or general uses
Low shrinkage ensures dimensional accuracy and reliable mold replication
Robust environmental resistance for extended service life
Jessica G.
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