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Adheseal Primer 50A is an adhesion-promoting primer for non-porous substrates used in sign manufacturing, marine, and automotive industries. It features a rapid 15-second evaporation-based dry time and concrete adhesion enhancement for Polyurethane and MS sealants on difficult powder-coated surfaces.
Adheseal Primer 50A is proven to extend the service life and long-term durability of adhesive bonds in both internal and external environments.
Frequently Asked Questions
What type of surfaces is Primer 50A suitable for?
Primer 50A is specifically formulated for non-porous surfaces such as powder-coated aluminium, glass, plastics, fibreglass, and painted metal.
How do I apply Primer 50A?
Apply with a clean, lint-free cloth or primer pad. Wipe over the bonding area in one even stroke. Allow solvent to evaporate (usually within 1 minute) before applying the sealant or adhesive.
Can Primer 50A be used on porous substrates like concrete or timber?
No. Primer 50A is not suitable for absorbent surfaces. Use a polyurethane primer like Primer 2001 for porous substrates.
Is Primer 50A compatible with all sealants?
Yes. Primer 50A is compatible with polyurethane, MS polymer, silicone, and acrylic sealants and adhesives.
Does Primer 50A leave a visible residue?
No. Primer 50A is a clear alcohol-based solution that evaporates cleanly and does not stain most surfaces when applied correctly.
Applications & Benefits
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Bonding to powder-coated aluminium window frames | Improves sealant adhesion and prevents edge lift on glossy finishes | Glaziers, Window Installers, Sealant Applicators |
| Adhering to smooth plastic signage components | Creates micro-etched surface on plastics for reliable bonding | Signwriters, Fabricators, Automotive Fitters |
| Sealing around painted metal structures or balustrades | Ensures long-term bond on painted steel and aluminum | Builders, Metal Fabricators, Waterproofers |
| Fixing accessories to glass shower panels or splashbacks | Strengthens grip of adhesives on non-porous glass surfaces | Bathroom Renovators, Joiners, Interior Fitout Teams |
| Marine and automotive sealing on gel coat or fibreglass | Improves compatibility with PU and MS sealants for exposed installations | Marine Technicians, Vehicle Body Repairers |
Applying Primer 50A: Step-by-Step Instructions
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1. Clean the Surface
Ensure the surface is dry and free from grease, oil, dust, and any contaminants. Use an appropriate cleaner or degreaser.
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2. Soak the Application Cloth
Dampen a clean, lint-free cloth or primer pad with Primer 50A. Do not oversaturate.
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3. Wipe Onto Substrate
Apply Primer 50A in a single uniform stroke across the bonding area. Avoid circular motion or double-application.
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4. Allow to Flash Off
Let the primer dry for approximately 30 seconds to 2 minutes. The surface should appear dry and clear before proceeding.
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5. Apply Sealant or Adhesive
Apply the selected Adheseal sealant or adhesive immediately after flash-off. Do not delay or allow contamination.
Limitations & Safety
Product Limitations
Not suitable for porous surfaces such as timber, concrete, or masonry.
Do not over-apply — one thin coat is sufficient to activate bonding surface.
Apply sealant shortly after priming; avoid delays to prevent surface contamination.
Do not use near ignition sources — highly flammable alcohol base.
Safety & Handling Requirements
Personal Protective Equipment
Wear chemical-resistant gloves, safety glasses, and appropriate PPE when applying Primer 50A.
Ventilation
Use in a well-ventilated area. Avoid inhaling vapours. Consider using a respirator in enclosed spaces.
Storage & Handling
Store tightly sealed in a cool, dry, and well-ventilated area. Keep away from heat, sparks, and flames.
Emergency First Aid
Eyes:
Flush with water for at least 15 minutes. Seek medical advice.
Skin:
Wash thoroughly with soap and water. Remove contaminated clothing.
Inhalation:
Move to fresh air. Seek medical attention if symptoms persist.
Ingestion:
Do not induce vomiting. Rinse mouth and contact poison control or a doctor immediately.
Refer to the Safety Data Sheet (SDS) for full safety and hazard information.
Primer 50A Application Guide
Powder-Coated Aluminium
Surface Preparation
Clean surface with solvent cleaner or degreaser to remove oils and dust.
Primer 50A required
Apply 50A using a clean cloth. Allow to flash off before applying sealant or adhesive.
Glass
Surface Preparation
Ensure surface is clean, dry, and free of fingerprints or silicones. Use alcohol-based glass cleaner or IPA.
Primer 50A required
Apply a thin coat using lint-free cloth. Allow to dry before bonding.
Painted Metal Surfaces
Surface Preparation
Degrease using solvent or alcohol-based cleaner. Check for adhesion compatibility on test patch.
Primer 50A recommended
Improves bond strength to painted metal where mechanical abrasion isn’t suitable.
Plastics (e.g. PVC, ABS)
Surface Preparation
Wipe surface with plastic-safe cleaner. Test adhesion on small area if unsure.
Primer 50A required
Essential for long-term bonding to smooth plastics with PU, MS, or silicone adhesives.
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