DOWSIL™ 785 Sanitary Acetoxy Silicone Sealant is a high-performance, one-part silicone sealant specifically designed for sanitary and hygienic applications. It offers excellent mold and mildew resistance, making it ideal for environments exposed to moisture, steam, and cleaning agents—such as kitchens, bathrooms, hospitals, and food preparation areas.
Key Features
Acetoxy cure system – cures quickly at room temperature with moisture
Contains fungicide – provides long-term resistance to mold and mildew
Certified for sanitary use – compliant with EN ISO 846 (anti-fungal standard)
Excellent adhesion to ceramics, glass, porcelain, and most sanitary plastics
Flexible and durable – maintains seal integrity under thermal and mechanical stress
Waterproof and non-yellowing
Low dirt pickup – helps maintain clean appearance over time
Typical Technical Properties
| |
| Property | Value |
| Cure Type | Acetoxy (moisture cure) |
| Tack-free time | ~15 minutes (at 23°C, 50% RH) |
| Skin-over time | ~10–20 minutes |
| Full Cure (2–3 mm depth) | 24 hours |
| Hardness (Shore A) | ~20–25 |
| Elongation at Break | ~400% |
| Tensile Strength | ~1.5 MPa |
| Service Temperature Range | -50°C to +150°C |
| Color options | White, Clear, Translucent |
Applications
* Sealing around baths, sinks, showers, and tiles
* Kitchen and bathroom joints
* Hospital, laboratory, and cleanroom surfaces
* Food preparation areas (non-food-contact surfaces)
* Window and sanitary fixture sealing
Handling & Safety
* Acetoxy curing system releases acetic acid (vinegar-like smell) during cure – use in ventilated areas
* Avoid contact with uncured sealant on skin or eyes
* Ensure surfaces are clean, dry, and free of oils or soap residue
* Store between 5°C and 30°C, avoid direct sunlight
* Shelf life: Typically 12 months in unopened packaging
* Follow guidance in the Safety Data Sheet (SDS) for safe use
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