Product Properties
- Viscosity: ~80 cps (Brookfield RVF, 20 rpm)
- Gel Time: 10–14 minutes (100 g sample, 2% MEKP)
- Weight per Gallon: 8.28 lb/gal
- Penetration: Deep wetting and absorption into porous surfaces
- Topcoat Window:
1–2 hours for polyester, urethane, vinyl ester
≥8 hours cure + sanding for epoxy systems
- HDT: 180°F (82°C)
- Colour: Clear
Key Features
Deep Surface Penetration
Ultra-low viscosity ensures thorough saturation of porous substrates, delivering a more complete and consistent seal.
Rapid Curing
Surfaces are ready for topcoating in 1–2 hours—often faster—improving throughput and reducing downtime.
Easy Application
Can be sprayed, brushed or rolled to suit any workshop process or project size.
High Compatibility
Provides strong adhesion for lacquers, urethanes, polyester coatings, vinyl esters and most epoxy systems.
Improved Surface Quality
Creates a smooth, sealed foundation that enhances the performance of subsequent primers and topcoats.
Thermal Stability
Offers an HDT of 82°C (180°F), supporting higher processing temperatures.
Why Choose Duratec® Primers?
Exceptional Surface Quality
Formulated to eliminate pinholes, porosity and print-through, Duratec primers build rapidly to deliver a fair, high-density surface ready for sanding and finishing.
Fast & Efficient Processing
High-solids, easy-to-sand formulations reduce labour time while delivering consistent results—ideal for commercial production environments.
Proven Performance in Demanding Environments
Originally developed for high-performance marine applications, Duratec primers now support a wide range of industries requiring accuracy, stability, and long-term durability.
Compatible with Multiple Substrates
Suitable for polyester, vinyl ester, epoxy laminates, FRP moulds, plug construction, composite tooling, and repair substrates.
Performance You Can Trust
Applications
Duratec® Crystal Clear Sealer is ideal for:
Sealing porous or absorbent substrates such as wood, foam, fillers, MDF, model-making materials and composites
Enhancing adhesion for polyester, vinyl ester, urethane and lacquer systems
Preparing surfaces for epoxy coatings, especially when mechanical adhesion is required
Plug, pattern and model construction where surface uniformity and coating performance are essential
Repair and refinishing work on composite structures requiring a stable, sealed base
Improving surface quality before applying high-build primers and topcoats
Industrial and marine components requiring fast turnaround and consistent sealing performance
ATL Composites stocks a comprehensive range of Duratec primers and support materials, backed by technical expertise and industry-leading application knowledge. Our team can assist with product selection, processing recommendations and integration into marine, industrial or composite manufacturing workflows.
