Product Introduction
Momentive SNAPSIL™ RTV108 is a translucent, one-component silicone adhesive sealant offering a durable paste consistency for general-purpose bonding and sealing. It cures at room temperature through exposure to atmospheric moisture and forms a strong, flexible silicone rubber. RTV108 adheres well to many clean surfaces and is suitable for vertical and overhead applications. Its excellent weatherability, ozone resistance, chemical stability, and electrical performance support a wide range of industrial applications.
Momentive SNAPSIL™ RTV108 Features
- General-purpose one-component silicone sealant
- Paste consistency ideal for non-horizontal surfaces
- Moisture-cure system forming durable silicone rubber
- Excellent flexibility and mechanical durability
- Superior weathering, ozone, and chemical resistance
- High-performance electrical insulation properties
- Color: Translucent
- Tack-free time: ~30 minutes
- Tensile strength: 25 kg/cm² (350 psi)
- Elongation: 350%
- Hardness: Shore A 20
- Shear strength: 7 kg/cm² (125 psi)
- Peel strength: 3 kg/cm (25 lb/in)
- Dielectric strength: 16 kV/mm (400 V/mil)
- Continuous operating temperature: up to 260°C (500°F)
- Intermittent operating temperature: up to 315°C (600°F)
Momentive SNAPSIL™ RTV108 Applications
- General-purpose bonding and sealing
- Electrical insulation and protective sealing
- Formed-in-place gasketing for industrial equipment
- Vertical and overhead sealing applications
- Thin-section potting tasks
- FDA 21 CFR 177.2600 compliant
- USDA-approved for food-contact equipment
- NSF International Standard No. 51 listed
- UL Recognized (File No. E-36952)
- Meets MIL-A-46106 Group I, Type I (General-Purpose Paste)
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 |
|---|---|
| Consistency | Paste (102,103,106), Self-leveling (108,109,112,116,118) |
| Color | White (102), Black (103), Translucent (108,118), Aluminum (109), Red (106,116), White (112) |
| Viscosity | RTV108: 250 poises, RTV109: 200 poises |
| Application Rate | 400 g/min (102,103) |
| Specific Gravity | 1.05–1.09 depending on grade |
| Tack-Free Time | 20–30 minutes depending on grade |
| Tensile Strength | 23–28 kg/cm² (325–400 psi) |
| Elongation | 325–450% |
| Hardness | Shore A 20–30 |
| Tear Strength | 7–8 kg/cm (40–45 lb/in) for paste-grade |
| Shear Strength | 7–14 kg/cm² (100–200 psi) |
| Peel Strength | 3–7 kg/cm (15–40 lb/in) |
| Dielectric Strength | 16–20 kV/mm |
| Dielectric Constant @ 60 Hz | 2.8 |
| Dissipation Factor @ 60 Hz | 0.001 |
| Volume Resistivity | 3×10¹⁴ to 3×10¹⁵ ohm·cm |
| Brittle Point | -60 °C (-75 °F) |
| Max Continuous Operating Temp | 204–260 °C depending on grade |
| Max Intermittent Operating Temp | 260–315 °C depending on grade |
| Linear Shrinkage | 1.0% |
| Thermal Conductivity | 0.0005 cal/sec/cm²°C/cm |
| Coefficient of Expansion | 27×10⁻⁵ cm/cm°C |
