Key Features & Benefits
Excellent water resistance and reduced risk of blistering
Improved impact resistance and durability in service
Produces smooth, high-gloss cosmetic surfaces
Easy handling and controlled application in production
Suitable for general moulding and long-term maintenance
Suitable for glass fibre, carbon fibre, and aramid Trusted performance for marine applications
Applications
Crystic® Gelcoat 65PA is recommended for:
Marine mouldings
Hulls, decks, and marine components requiring durable cosmetic finishes
Land transport components
Panels and moulded parts with high surface quality requirements
Building & architectural mouldings
General composite moulding applications
Moulded components requiring ease of repair and long-term gloss retention
Processing & Application
Crystic® Gelcoat 65PA is pre-accelerated and formulated for brush application. It requires only the addition of a suitable MEKP catalyst to initiate curing.
Recommended catalyst: 2% Butanox® M-50 or equivalent
Recommended wet film thickness: 600–800 microns
Apply backing laminate once the gelcoat has reached the appropriate degree of cure, typically within 24 hours
Post curing is recommended to achieve optimum mechanical, thermal, and water-resistance properties prior to placing parts into service.
Mechanical & Thermal Properties (Cured)
Tensile Strength: ~75 MPa
Tensile Modulus: ~3500 MPa
Barcol Hardness: ~42
Heat Deflection Temperature (HDT): ~75°C
Flexural Strength: ~126 MPa
Packaging & Availability
Packaging:
Clear – 20 kg pail
White – 25 kg pail
Storage:
Store in original, sealed containers at temperatures below 25°C.
Product must not be frozen.
ATL Technical Support
ATL Composites provides application guidance, catalyst selection advice, and infusion optimisation support to help ensure reliable processing and consistent laminate quality when using Crystic® VE 679-03PA systems.
Key Features & Benefits
Enables improved process control, reduced shrinkage, and superior surface finish on large mouldings
Supports reliable infusion of complex laminates with minimal risk of dry spots
Produces smooth, durable surfaces suitable for high-quality visible components
Proven long-term performance in marine and wet environments
Optimised for vacuum infusion using medium-reactivity MEKP catalysts
Suitable for glass fibre, carbon fibre, and aramid reinforcements
Resin Variants & Processing Windows
Crystic® VE 679-03PA is supplied in two infusion-optimised variants:
Typical gel time:
~60 min with 1.5% Butanox® M50 @ 25°C
~80 min with 2.0% Trigonox® 249 @ 25°C
Ideal for medium to large infused parts requiring controlled exotherm and high surface quality
Typical gel time:
~100 min with 1.5% Butanox® M50 @ 25°C
Designed for very large or complex infusions where extended flow time and maximum process control are required
Resin Properties (Uncured)
Appearance: Brown / Red
Viscosity: ~175 mPa·s (Brookfield Spindle 3, 60 rpm @ 25°C)
Specific Gravity: ~1.1
Volatile Content: ~41%
Storage Stability: Up to 6 months at ≤20°C
Mechanical & Thermal Properties (Cured
Barcol Hardness: ~34
Heat Deflection Temperature (HDT): ~97°C
Tensile Strength: ~64 MPa
Tensile Modulus: ~3.4 GPa
Elongation at Break: ~2.3%
Post curing is recommended to achieve optimum chemical, water, and heat resistance for demanding service environments.
Processing & Handling
Crystic® VE 679-03PA is pre-accelerated and requires only the addition of a suitable medium-reactivity MEKP catalyst. Low-exotherm catalyst systems may be used to further optimise cure control, reduce shrinkage, and enhance surface finish.
Important: Catalyst and accelerator must never be mixed directly together.
Packaging & Availability
1000 kg IBCs
Bulk supply available on request
ATL Technical Support
ATL Composites provides application guidance, catalyst selection advice, and infusion optimisation support to help ensure reliable processing and consistent laminate quality when using Crystic® VE 679-03PA systems.
Durable mixing sticks for accurate blending of resins and hardeners.
| Pack Size | 100 Pack (SKU: 804) |
A practical mixing, application, filleting and cleaning tool. Squared, beveled end reaches mixing pot corners for thorough mixing and blending in fillers and for cleaning up excess epoxy. Use rounded end to shape 3/8″ radius fillets. Cured epoxy pops of easily, so they can be reused many times. ¾”-wide x 5½”.
SKU: 804-8
| Pack Size | 8 Pack (SKU: 804-8) |
| 60 Pack (SKU: 804-60) |
These versatile, reusable 13.7 x 152.4mm flexible plastic spreaders are designed for smooth, controlled application of epoxy systems. Featuring double-edged profiles, they are ideal for flow coating, fairing, filling, gap-filling and applying reinforcement fabrics. Their flexibility allows for precise material placement across flat or contoured surfaces, helping achieve clean, consistent results with every use.
| Pack Size | 2 Pack (SKU: 808-2) |
Flexible squeegee for spreading resin and eliminating air pockets
| Pack Size | Single (SKU: 808) |
These thin polyurethane foam covers are the only roller covers recommended for epoxy application. The thin foam allows you to control film thickness, avoid drips and runs, and get a smoother coating. The 180mm covers can be cut for smaller jobs, narrow strips and tight areas. Cut segments to make an ideal tipping brush.
| Pack Size | 2 Pack (SKU: 800-2) |
Mini syringes can be loaded with your epoxy mixture for injecting into tight spots. Ideal for hardware bonding and small repairs. Holds 12 ml a,d 60cc.
| Pack Size | Mini 12ml Sold individually ( SKU: 807) |
| 60cc Sold individually (SKU: 807) |
Additional Static Mixing Nozzles Attachment for WEST SYSTEM® Six10 thickened epoxy adhesive.
| Pack Size | Single (SKU: KA600-2) |
Mixing container designed for accurate, high-volume batch preparation.
| Pack Size | 500ml Single (SKU: 805) |
| 2 ltr - Single (SKU: 806) |
Chemical-resistant disposable gloves for safe handling of resins
| Pack Size | 100 Pack (SKU: 832) |
12 mm Laminating Roller – Laminating roller for consolidating fibre reinforcement and removing trapped air – 12mm
| Pack Size | Single (SKU: 812) |
A durable abrasive pad for cleaning, de-waxing and preparing surfaces before bonding or coating.
| Pack Size | Single (SKU: 809) |
A comprehensive collection detailing epoxy boatbuilding methods, proven fibreglass repair practices, and the fundamentals of wooden boat restoration.
| Gougeon Book Boat Construction | Single (SKU 002) |
| Wooden Boat Restoration | Single (SKU 970) |
| Fibreglass Boat Repair & Maintenance | Single (SKU: 550) |
WEST SYSTEM® provides reliable, easy-to-use epoxy products engineered for strong, durable bonds in construction, repair and maintenance.
| WEST SYSTEM brand Technical Manual | Single (SKU: 950) |
| WEST SYSTEM Other Uses Manual | Single (SKU: 425) |
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