Product Introduction
Momentive SILTRUST™ RTV8111 is a two-part silicone elastomer supplied as a ready-to-use kit containing a base compound and curing agent. It cures at room temperature to form a durable, resilient rubber with outstanding electrical insulation and mechanical performance. RTV8111 is non-corrosive to copper, offers dependable adhesion when used with primer, and maintains elastomeric stability at continuous temperatures up to 204°C (400°F). Designed to meet MIL-S-23586E requirements, it is well suited for high-reliability aerospace, defense, and commercial electronic potting applications.
Momentive SILTRUST™ RTV8111 Features
- Meets MIL-S-23586E physical and electrical specifications
- Non-corrosive to copper
- Continuous thermal stability up to 204°C (400°F)
- Excellent primer-assisted adhesion
- Room-temperature curing; solvent-free formulation
- Easily pourable viscosity: 9,900 cps
- Specific gravity: 1.18
- Curing agent addition: 2–4%
- Pot life at 25°C: 0.5 hours
- Cure time at 25°C: 24 hours
- Hardness: Shore A 45
- Tensile strength: 25 kg/cm² (350 psi)
- Elongation: 160%
- Dielectric strength: 19.7 kV/mm (500 V/mil)
- Volume resistivity: 1 × 10¹⁵ ohm-cm
- Thermal operating range: −54°C to 204°C (−65°F to 400°F)
- Thermal conductivity: 0.29 W/m·K
- Coefficient of linear expansion: 25 × 10⁻⁵ cm/(cm°C)
Momentive SILTRUST™ RTV8111 Applications
- Potting of electronic circuit modules
- Encapsulation of coils, sensors, and electrical connectors
- Aerospace and defense electronic modules
- High-reliability commercial electronics
- Applications requiring strong dielectric insulation
- Potting where flowability and easy deaeration are required
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 |
|---|---|
| Color | White |
| Consistency | Easily pourable |
| Viscosity | 9,900 cps |
| Specific Gravity | 1.18 |
| Curing Agent Loading | 2–4 wt% |
| Pot Life (25°C) | 0.5 hours |
| Cure Time (25°C) | 24 hours |
| Hardness (Shore A) | 45 |
| Tensile Strength | 25 kg/cm² (350 psi) |
| Elongation | 160% |
| Tear Strength | 4.3 kg/cm (24 lb/in) |
| Linear Shrinkage | 1.0% |
| Dielectric Strength | 19.7 kV/mm |
| Dielectric Constant | 3.3 |
| Dissipation Factor | 0.0055 |
| Volume Resistivity | 1×10¹⁵ Ω·cm |
| Useful Temperature Range | –54 to 204°C |
| Thermal Conductivity | 0.29 W/m·K |
| Coefficient of Linear Expansion | 25×10⁻⁵ cm/(cm°C) |
| Specific Heat | 0.35 cal/(g°C) |
