Description
TECTYL® 7191 Clear is a premium water-based rust-proofing compound manufactured by Daubert Chemical Company, specifically designed to protect enclosed automotive body sections. This innovative formulation features a thin gel with low viscosity that allows for excellent film build on vertical surfaces while providing superior seam penetration through capillary action into areas with metal-to-metal overlap. The resulting clear film repels water, self-heals, and remains flexible to prevent chipping or cracking, making it ideal wherever a water-displacing, long-term, inner body corrosion preventive is needed.
Properties
- Dry Film Color: Clear
- Film Type: Self-healing, flexible
- Appearance: Clear, low viscosity, thixotropic liquid
- Specific Gravity: 0.98
- Weight per Gallon: 8.2 lbs
- Composition: Water-based with no flash point
- Viscosity: 20-30 seconds (#4 Ford Cup)
- Solids by Weight: 41%
- Solids by Volume: 39%
- VOC: 0.5 lbs/gal
- Film Thickness: 125 microns (5 mils) wet, 50 microns (2 mils) dry
- Corrosion Resistance:
- 5% Salt Fog @ 40°C (ASTM B-117): Pass 240 hours
- Humidity Cabinet @ 40°C and 100% RH (ASTM D-1748): Pass 1000 hours
- Salt Water Immersion Mil-C-0083933 (MR): Pass one week at 40°C
- Special Properties:
- Water Displacement Mil-C-0083933: Pass with excellent adhesion
- Creep Mil-C-0083933 (MR): 6 to 12 mm between overlapping metal panels
- Low Temperature Flexibility: No cracking at -40°C
- High Temperature Flow Resistance: No flow at 100°C
- Paint Staining: Will not stain automotive paint finishes
Key Features
- Superior Seam Penetration: Thin gel, low viscosity formulation provides excellent capillary action
- Self-Healing Properties: Film can repair minor damage, extending protection life
- Water Repellent and Displacing: Effectively prevents moisture-related corrosion
- Flexible Film: Remains flexible across extreme temperatures (-40°C to 100°C)
- Ultra-Low VOC Formula: At just 0.5 lbs/gallon VOC content, exceeds environmental regulations
- Non-Staining: Will not stain automotive paint finishes
- Clear Appearance: Invisible protection that doesn’t alter the appearance of treated areas
- Quick Drying: Dries to touch in 2 hours and weatherproof in 16 hours
- Freeze-Sensitive: Water-based formula requires protection from freezing temperatures
Ideal Applications
Automotive Body Protection:
- Enclosed body sections requiring corrosion protection
- Door panels, pillars, and structural components
- Areas with metal-to-metal overlap that are prone to moisture entrapment
- Seams and joints requiring invisible protection
- Inner body cavities needing long-term corrosion prevention
Transportation Industry:
- Fleet vehicle maintenance and preservation
- Buses, trucks, and commercial vehicles
- Critical areas requiring water-displacing protection
- Areas prone to moisture accumulation
Manufacturing:
- Assembly operations where seam protection is critical
- Metal components with complex joint configurations
- Applications requiring invisible, non-staining protection
- Areas where water displacement and corrosion protection are essential
Application Guidelines
TECTYL® 7191 Clear is formulated to be used as supplied without thinning. This water-based coating requires specific handling and application considerations.
Surface Preparation:
- For maximum performance, metal surfaces must be clean, dry, and free of rust, oil, and mill scale
- Recommended substrate temperature during application: 50-95°F (10-35°C)
Application Methods:
- Normally applied by low pressure airless spray equipment
- Use spray wands capable of coating critical areas through existing openings
- When sprayed at 125 microns (5 mils wet), product will dry to touch in 2 hours and weatherproof in 16 hours
- For optimal results, ensure ambient and product temperature is between 50-95°F (10-35°C) at time of application
Important Notes:
- If product thickens due to cold storage or loss of water and coalescing solvent, contact Daubert Chemical Company
- DO NOT THIN the product as incorrect thinning will affect film build, dry time, and performance
- DO NOT FREEZE the product—the water-based formula is freeze-sensitive
- The addition of any product over or under this coating is not recommended due to potential chemical incompatibility
- The partially cured film should not be exposed to ignition sources
Storage and Handling
- Store at temperatures between 50-95°F (10-35°C)
- Mild agitation is recommended prior to use
- Protect from freezing temperatures
- Adequate ventilation is required for cure and to ensure against formation of a combustible liquid atmosphere
- The partially cured film should not be exposed to ignition sources such as flares, flames, sparks, excessive heat, or torches
- Wet films can be removed using soap and water
- Dried films can be removed with kerosene or mineral spirits
- Refer to Daubert’s Material Safety Data Sheet for complete health and safety instructions