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Ultra-low volatility formulation designed for clean, dry sealing without outgassing concerns in sensitive environments.
Excellent adhesion to glass, aluminum, stainless steel, and common engineering plastics without primer.
Fast skin-over time (<60 minutes) enabling rapid handling and reduced production cycle times.
Wide service temperature range from –40 °C to +150 °C with retained elasticity and sealing integrity.
Meets ASTM C920 Type S, Grade NS, Class 25 for structural silicone sealant performance.
Sealing of insulating glass units (IGUs) in architectural façades and curtain walls.
Bonding and sealing of solar photovoltaic module frames and junction boxes.
Hermetic sealing of electronic enclosures and LED lighting housings.
Low-outgassing sealing for vacuum chambers and semiconductor manufacturing equipment.
Weatherproofing of precision optical assemblies and medical device housings.
| Chemical Type | Acetoxy-cured silicone elastomer |
| Product Form | One-component, paste-like sealant in cartridge or sausage packaging |
| Appearance | Opaque white or translucent gray, smooth homogeneous paste |
| Primary Applications | Structural and non-structural dry-seal bonding in IGUs, electronics, and clean-tech assemblies |
| Key Features | Low VOC, primerless adhesion, fast surface cure, no plasticizer migration |
| Benefits | Reduces contamination risk, eliminates secondary priming steps, supports automated dispensing |
| Shelf Life | 12 months unopened at ≤25 °C in original sealed packaging |
| Standards Compliance | ASTM C920, ISO 11600 F25HM, UL 94 HB (as cured) |
Q1: What is the primary function of DOWSIL Dry Seal E Silicone in packaging applications?
A: DOWSIL Dry Seal E Silicone is a food-contact-approved silicone emulsion designed to enhance dry-seal performance in paper and board packaging—particularly for heat-sealable laminates used in pouches, sachets, and flexible food packaging. It improves seal integrity, hot-tack strength, and resistance to delamination under thermal and mechanical stress.
Q2: Is DOWSIL Dry Seal E Silicone suitable for direct food contact applications?
A: Yes, it is formulated and tested to comply with global food-contact regulations, including FDA 21 CFR §175.105 and EU Framework Regulation (EC) No 1935/2004, when used as intended and within recommended application levels. Final compliance depends on the full formulation and processing conditions.
Q3: How is DOWSIL Dry Seal E Silicone typically applied to substrates?
A: It is commonly applied via roll coating, gravure, or spray methods onto paper, paperboard, or metallized films—either inline during converting or as a pre-treatment step. Optimal performance is achieved when dried thoroughly prior to lamination or sealing.
Q4: Can DOWSIL Dry Seal E Silicone be used in combination with other barrier coatings?
A: Yes, it is compatible with common water-based barrier coatings such as PVdC-free acrylics, starch derivatives, and certain polyvinyl alcohol (PVOH) systems. Compatibility testing under actual production conditions is recommended to ensure adhesion and functional performance.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
