Momentive RTV118 Self-Leveling Electrical Potting Sealant
Product Properties
| Property | RTV118 Value |
|---|
| Uncured Properties |
|
| Consistency | Self-leveling |
| Color | Translucent |
| Viscosity (poises) | 200 |
| Tack-Free Time (min) | 20 |
| Specific Gravity | 1.05 |
| Cured Properties | (3 days at 25°C/50% RH) |
| Tensile Strength | 23 kg/cm² (325 lb/in²) |
| Elongation | 325% |
| Hardness (Shore A) | 25 |
| Dielectric Strength | 16 kV/mm (400 V/mil) |
| Volume Resistivity | 6×10¹⁴ ohm-cm |
| Max Continuous Temp | 204°C (400°F) |
| Max Intermittent Temp | 260°C (500°F) |
| Linear Shrinkage | 1.0% |
| Missing Data | Tear Strength, Shear Strength, Peel Strength |
Product Introduction
RTV118 is a translucent, self-leveling silicone adhesive sealant
from the SNAPSIL™ RTV100 Series. As a one-component,
moisture-curing product, it forms a resilient rubber at room
temperature and releases acetic acid vapors during cure. Its
flowable consistency enables penetration into fine crevices, making
it ideal for thin-section applications (<6mm). Compliant with
FDA 21 CFR 177.2600, USDA, and NSF Std. 51, it is suitable for
indirect food contact.
Advanced Properties
RTV118 combines electrical insulation (Dielectric Strength: 16
kV/mm) with extreme temperature resilience (–60°C to 260°C). Its
low viscosity (200 poises) ensures seamless coverage on complex
surfaces. Critical limitations include:
- Thickness Restriction: ≤6mm to ensure complete curing.
- Metal Sensitivity: Not recommended for copper/brass due to corrosion risk.
- Cure Dependency: Accelerated by high humidity/temperature; delayed in dry/cold
environments.
Application Scenarios
- Thin Section Potting & Encapsulation: Protecting delicate electronic components, sensors, or circuitry
where a thin, self-leveling, insulating layer is needed. Its
translucency allows visual inspection of components. [Commonly cited for PCB edge sealing, sensor sealing]
- Self-Leveling Protective Coatings: Providing uniform, protective, and insulating layers on surfaces
like metal housings or circuit boards, filling minor surface voids
effectively. [Used in consumer electronics, lighting fixtures]
- Electrical Insulation in Non-Critical Areas: Sealing electrical connections, splices, or busbars in
environments demanding good dielectric properties and environmental
sealing. (Note TDS limitation on corrosion-sensitive metals).
- Gasketing & Sealing Thin Joints: Forming seals in assemblies with fine gaps, especially where
vertical flow is needed (though depth must be <= 6mm). Its
translucency is beneficial in optical or display applications. [Examples: Sealing lens assemblies, display bezels]
- Medical Device Assembly (Non-Implantable): Used in the assembly of non-implantable medical equipment
requiring USP Class VI compliance, biocompatibility, and sealing
properties (e.g., housings, fluid path seals). [Referenced in supplier application notes for diagnostic equipment]
- Automotive Lighting: Sealing tail lights, side markers, and other exterior lighting
assemblies requiring temperature resistance and environmental
sealing. [Mentioned in automotive aftermarket/repair guides]
FAQ
1. Who are we?
We are Shenzhen Huazhisheng New Material Technology Co., Ltd., a
professional industrial adhesives and sealants supplier based in
China since 2018. we serve global markets: Mainland China (60%),
Southeast Asia (20%), North America (10%), and Europe (10%).
2. What products do you offer?
we supply high-performance adhesives and sealants from global
leaders including:
Cemedine, Dow Corning, Shin-Etsu, Araldite, and Momentive,etc.
3. How do you guarantee product quality?
Quality assurance through:
Mandatory pre-production samples approval
Final inspection by QC team before shipment
International certifications: SGS, UL, FDA, RoHS, REACH
4. Why choose us over other suppliers?
Reliable Supply:Authentic products from top manufacturers
Expert Support:Technical guidance for product selection
Global Compliance:Certifications meeting target market standards
Efficient Service:Customized solutions & professional support
5. What services do you provide?
Delivery:EXW/FOB/CIF
Payment:USD/EUR/CNY/HKD via T/T, L/C
Support:Technical consultation & logistics coordination
