Item No.: RTV615
Manufacturer: Momentive Performance Materials
Technologies: Two-component RTV silicone rubber compound
Cure Type: Addition cure (room temperature or heat accelerated)
Package Size: Typically available in matched kits
Shelf Life: 12 months
RTV615 is a clear, two-component silicone rubber compound that cures at room temperature to form a high-strength, optically clear elastomer. It is supplied in a matched kit with a curing agent, used at a 10:1 mix ratio by weight (Part A:Part B).
Key attributes of RTV615:
Low viscosity and easily pourable, ideal for potting and encapsulation.
Provides excellent protection for electronic components and assemblies against:
Shock & vibration
Moisture, dust, ozone, and chemicals
Optical clarity makes it suitable for:
Solar cell potting (to maximize light transmission)
Electronic assemblies where visual inspection or component identification is required
Thermal performance: maintains elastomeric properties from -60°C to 204°C (-75°F to 400°F)
| Property | RTV615 |
|---|---|
| Mix Ratio (A:B by weight) | 10:1 |
| Color (Uncured/Cured) | Clear, Colorless |
| Viscosity (cps) | 4000 |
| Work Time @ 25°C (77°F) | 4 hours |
| Cure Time | 7 days @ 25°C 1 hr @ 100°C |
| Hardness (Shore A) | 44 |
| Tensile Strength | 920 psi (65 kg/cm²) |
| Elongation | 120% |
| Shrinkage | 0.2% |
| Refractive Index | 1.406 |
| Dielectric Strength | 500 V/mil (19.7 kV/mm) |
| Dielectric Constant @ 1000 Hz | 2.7 |
| Dissipation Factor @ 1000 Hz | 0.0006 |
| Volume Resistivity | 1.8 × 10¹⁵ ohm·cm |
| Thermal Conductivity | 0.11 Btu/hr·ft²·°F/ft (0.00045 g·cal/sec·cm²·°C/cm) |
| Thermal Expansion Coefficient | 27 × 10⁻⁵ cm/cm·°C |
| Specific Heat | 0.3 cal/g·°C |
| Temperature Range | –60°C to +204°C (–75°F to +400°F) |
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