Momentive RTV118 Self-Leveling Electrical Potting Sealant

Product Specification

Momentive RTV118 Self-Leveling Electrical Potting Sealant

Product Properties

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