Product Properties
- Viscosity: 1900–2500 cps (Brookfield RVF, Spindle #2, 20 rpm)
- Thixotropic Index: 6.5
- Gel Time: 22 minutes ± 2 minutes (100 g sample, 2% MEKP)
- Weight per Gallon: 11.8 lb/gal
- Coverage: 80 sq ft per gallon at 20 mil thickness
- Maximum Recommended Film Build: Up to 40 mils
- Colour: Grey
Key Features
Exceptional Sandability
Formulated for extremely easy sanding, enabling faster progression to a smooth, polishable surface with minimal labour.
Low-Porosity Finish
Produces a dense, uniform surface that reduces pinholes, porosity and preparation time before topcoating.
Rapid Film Build
Builds up to 40 mils, allowing efficient elimination of surface defects, waviness and tool-path marks.
Easy Spray Application
Sprays smoothly from HVLP guns with excellent flow and atomisation, reducing overspray and defects.
Cost-Efficient Processing
Minimises sandpaper use and sanding hours, reducing overall finishing costs and improving throughput.
Strong Adhesion to Multiple Substrates
Bonds to epoxy laminates, polyester and vinyl ester fiberglass, MDF, tooling board, plaster, clay, and other non-metal surfaces.
High Thermal Stability
Heat distortion temperature of 180°F (83°C), suitable for tooling and pattern work exposed to elevated 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® Grey EZ Sanding Primer is ideal for a wide range of plug, pattern and composite surfacing requirements, including:
Surfacing composite plugs and patterns prior to mould construction
Tooling board finishing, including polyurethane and epoxy tooling boards
MDF, plaster, clay and model-building substrates requiring a smooth, polishable coating
FRP laminates made with polyester, vinyl ester or epoxy resins
Fairing and refining surface profiles before high-build coating or topcoat application
Eliminating porosity, tool-path marking and surface waviness on milled surfaces
Preparing parts for high-gloss polishing or paint systems in marine, automotive and industrial composites
Rapid surface correction where quick build and easy sanding are essential
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.
