DOWSIL™ PR-1200 RTV Prime Coat is a one-part, solvent-based silicone adhesion promoter (primer). It is specifically designed to improve the adhesion of room-temperature vulcanizing (RTV) and heat-cured silicone elastomers to a wide range of substrates such as metals, glass, ceramics, plastics, and composites.
It is available in clear and red versions for visual control during application and comes in small cans or pails depending on usage volume.
Key Features
- Improves Silicone Adhesion: Enhances the bond strength between silicone materials and difficult-to-bond surfaces.
- Versatile: Effective with both RTV and heat-cure silicone rubbers.
- Color Options: Available in clear (for discreet use) and red (for easy visual inspection).
- Multiple Substrate Compatibility: Suitable for use on metal, glass, ceramics, masonry, wood, and some plastics.
- Convenient Application: Can be applied via wiping, spraying, or dipping.
- Fast Drying: Dries at ambient temperature and humidity within 1–2 hours.
Applications
Electronics: Improves adhesion of silicone conformal coatings to circuit boards (e.g., FR-4 substrates).
Aerospace and Automotive: Used as a surface preparation primer before applying silicone sealants to metal and composite structures.
Construction: Prepares substrates for silicone weatherproofing sealants on curtain walls, facades, and glazing joints.
Mold Making and Casting: Enhances silicone rubber bonding to mold surfaces.
OEM Assembly: Used in manufacturing to ensure consistent silicone bonding in devices, appliances, and enclosures.
Safety and Handling Overview
Storage & Shelf Life
Store in tightly sealed containers in a cool, well-ventilated area.
Shelf life is typically 18 months at or below 35°C (95°F).
Handling Precautions
Highly Flammable: Contains volatile solvents (e.g., naphtha). Keep away from sparks, heat, or open flame.
Use only in well-ventilated areas. Vapors may cause dizziness or irritation.
Personal Protective Equipment (PPE):
Wear gloves, goggles, and protective clothing.
Avoid skin and eye contact; wash thoroughly after handling.
Disposal
Dispose of contents/container in accordance with local/regional/national regulations.
Do not discharge into drains or the environment.
First Aid
Inhalation: Move to fresh air, seek medical help if symptoms persist.
Skin contact: Wash with soap and water.
Eye contact: Rinse cautiously with water for several minutes.
Ingestion: Do not induce vomiting. Seek medical advice.
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