Key Features & Benefits
Enables application on vertical and contoured surfaces without sag or resin drainage
Achieves reliable cure in thin laminates with excellent surface quality
Produces smooth, durable cosmetic surfaces beneath structural laminates
Supports long-term performance in marine and water-exposed environments
Suitable for manual and spray lamination processes
Enhances surface finish and reduces post-finishing work
Applications
Crystic® VE679 PA (Thix HV) is recommended for:
Marine skincoats
Hulls, decks, and marine mouldings requiring enhanced surface finish
Tooling applications
Cosmetic surface layers beneath structural laminates
Swimming pools & wet-area structures
Where blister resistance and surface quality are critical
Hand lay-up & spray lamination processes
Cosmetic laminate layers
Used prior to structural vinyl ester or polyester backing laminates
Resin Properties (Uncured)
Appearance: Red / Brown
Viscosity (Thixotropic):
~2.5 dPa·s (ICI Cone & Plate @ 25°C)
~2550 mPa·s (Brookfield Spindle 3, 5 rpm @ 25°C)
~800 mPa·s (Brookfield Spindle 3, 50 rpm @ 25°C)
Gel Time @ 25°C:
~25 minutes with 2.0% Butanox® M50
Storage Stability: Up to 6 months at ≤20°C
Mechanical & Thermal Properties (Cured)
Barcol Hardness: ~35
Heat Deflection Temperature (HDT): ~94°C
Tensile Strength: ~52 MPa
Tensile Modulus: ~3.0 GPa
Elongation at Break: ~2.1%
Processing & Handling
Crystic® VE679 PA (Thix HV) is pre-accelerated and designed for cold curing. It requires only the addition of a medium-reactivity MEKP catalyst, such as Butanox® M50, at 1.2–2.0%.
Important: Catalyst and accelerator must never be mixed directly together.
Post curing is recommended to achieve optimum chemical, water, and heat resistance before placing parts into service.
Packaging & Availability
200 kg metallic drums
Technical Data Sheet
ATL Technical Support
ATL Composites provides technical support, catalyst selection guidance, and processing advice to ensure Crystic® VE 671-03 PA is correctly specified and optimised for chemical, thermal, and structural performance.
Key Features & Benefits
Suitable for exposure to a wide range of aggressive chemicals at ambient and elevated temperatures
HDT up to ~100°C with post cure, supporting elevated temperature service conditions
Excellent tensile, flexural, and impact performance for structural laminates
Low viscosity supports efficient fibre wet-out and consistent laminate quality
Optimised for low-reactivity MEKP systems where longer working time is required
Suitable for glass fibre, carbon fibre, and aramid reinforcements
Applications
Crystic® VE 671-03 PA is recommended for:
Chemical containment equipment
Tanks, vessels, pipes, ducting, and linings
Industrial composite structures
Components exposed to corrosive or high-temperature environments
Marine & automotive components
Where strength, durability, and chemical resistance are critical
Vacuum infusion & closed-mould laminates
Infrastructure and process equipment
Requiring long-term resistance to aggressive service conditions
Resin Properties (Uncured)
Appearance: Yellowish, clear
Viscosity: ~175 mPa·s (Brookfield Spindle 3, 60 rpm @ 25°C)
Gel Time @ 25°C:
~35 min with 2% Butanox® LPT
~110 min with 0.06% Acetyl Acetone + 2% Trigonox® 239
Storage Stability: Up to 6 months at ≤20°C
Mechanical & Thermal Properties (Cured)
Barcol Hardness: ~40
Heat Deflection Temperature (HDT): ~100°C
Tensile Strength: ~80 MPa
Tensile Modulus: ~3.4 GPa
Flexural Strength: ~130 MPa
Elongation at Break: ~4.5%
These properties make VE 671-03 PA particularly suitable for structural laminates requiring both toughness and chemical durability
Processing & Handling
Crystic® VE 671-03 PA is pre-accelerated and designed for cold curing. It requires only the addition of a low-reactivity MEKP catalyst, such as Butanox® LPT, to initiate cure.
Important: Catalyst and accelerator must never be mixed directly together.
Post curing is recommended to achieve optimum chemical, water, and heat resistance prior to placing parts into service.
Packaging & Availability
200 kg metallic drums
Chemical Resistance
Fully cured Crystic® VE 671-03 PA demonstrates excellent resistance across a broad range of chemical environments. For detailed compatibility data, chemical containment guidance, or specific exposure conditions, ATL Composites can assist with application-specific recommendations based on Scott Bader chemical resistance data.
ATL Technical Support
ATL Composites provides technical support, catalyst selection guidance, and processing advice to ensure Crystic® VE 671-03 PA is correctly specified and optimised for chemical, thermal, and structural performance.
Key Features & Benefits
Excellent resistance to water, UV exposure, and mild chemical environmentsutdoor exposure
Even coverage with minimal sagging and excellent opacity
Controlled application on vertical and complex surfaces
Ideal for exposed laminate backs and non-moulded surfaces
Produces a tough, wear-resistant finish
Applications
Crystic® TC 507 PA is recommended for:
GRP lined swimming pools
Protective finishing coats for the back of laminates
Marine composite structures
Areas requiring durable water-resistant topcoats
Industrial composite components
Protection against moisture and mild chemical exposure
Exposed laminate surfaces
Where cosmetic appearance and durability are required
Properties (Uncured)
Viscosity (ICI Cone & Plate @ 25°C): ~14 poise
Viscosity (Brookfield SP5 @ 2.5 rpm): ~45,000 mPa·s
Viscosity (Brookfield SP5 @ 20 rpm): ~10,000 mPa·s
Gel Time @ 25°C:
~15 min with 2.0% Butanox® M50
~25 min with 1.0% Butanox® M50
Specific Gravity @ 25°C: ~1.2
Properties (Cured)
Barcol Hardness: ~49
Water Absorption (24 hrs @ 23°C): ~16 mg
Heat Deflection Temperature (HDT): ~96°C
Tensile Strength: ~57 MPa
Tensile Modulus: ~3.9 GPa
Elongation at Break: ~1.6%
Processing & Application
Crystic® TC 507 PA is pre-accelerated and designed for brush or roller application.
Recommended application temperature: 18–25°C
Catalyst: 1–2% medium-reactivity MEKP (e.g. Butanox® M50)
Recommended wet film thickness: 500–800 microns
Important application notes:
Apply only to fully cured, clean laminates
Older laminates (>1 week) may require light abrasion prior to application
Do not use as an in-mould gelcoat
Post curing is recommended to achieve optimum water, chemical, and heat resistance
Packaging & Storage
Packaging:
Natural – 20 kg pail
White – 25 kg pail
Storage:
Store between 5°C and 25°C in original, unopened containers in a dry, well-ventilated area. Protect from freezing and direct sunlight.
Shelf life up to 5 months when stored correctly.
ATL Technical Support
ATL Composites provides local technical support, application guidance, and system selection advice to ensure Crystic® TC 507 PA delivers reliable protection and long-term performance in demanding composite environments.
Key Features & Benefits
Superior gloss retention and low colour change in outdoor exposure
Reduced environmental impact and improved operator safety
Even film build with minimal sag, drainage, or porosity
Smooth, durable cosmetic finish for exposed composite components
Ideal for marine and transport applications requiring long service life
Proven performance in marine service conditions
Applications
Crystic® GC LS 30PA (AUS) is recommended for:
Marine mouldings
Hulls, decks, and components exposed to harsh marine environments
Land transport components
Panels and mouldings requiring long-term UV and moisture resistance
High-performance cosmetic surfaces
General composite moulding applications
Where surface durability and weather resistance are critical
Properties (Uncured)
Viscosity (ICI Cone & Plate @ 25°C): ~2.0 poise
Viscosity (Brookfield SP5 @ 2.5 rpm): ~30,000 mPa·s
Viscosity (Brookfield SP5 @ 20 rpm): ~5,800 mPa·s
Gel Time @ 25°C:
~10 min with 2.0% Butanox® M50
~17 min with 1.0% Butanox® M50
Specific Gravity @ 25°C: ~1.1
Styrene Content: ~27%
Properties (Cured)
Barcol Hardness: ~46
Water Absorption (24 hrs @ 23°C): ~10 mg
Heat Deflection Temperature (HDT): ~62°C
Tensile Strength: ~52 MPa
Elongation at Break: ~2.8%
Processing & Application
Crystic® GC LS 30PA (AUS) is pre-accelerated and formulated for spray application.
Recommended application temperature: 18–25°C
Catalyst: 1–2% Butanox® M50 or equivalent MEKP
Recommended wet film thickness: 600–800 microns
Airless spray nozzle: 423–535
Spray pressure: 3–4.5 bar
Apply using controlled mist and build-up passes to achieve uniform thickness and surface quality. Post curing is recommended to achieve optimum mechanical, thermal, and water-resistance performance prior to service.
Packaging & Storage
Natural – 20 kg pail
White – 25 kg pail
Key Features & Benefits
Superior gloss retention and low colour change in outdoor exposure
Excellent water resistance and reduced blistering risk
Reduced environmental impact and improved workplace conditions
Even coverage with minimal drainage and low film porosity
Good impact resistance and surface durability
Proven performance in marine applications
Applications
Crystic® Gelcoat LS 97PA is recommended for:
Marine mouldings
Hulls, decks, and components requiring long-term gloss and colour stability
Transport & automotive components
Architectural & building mouldings
General composite mouldings
Where weathering performance is critical
High-visibility outdoor composite components
Properties (Uncured)
Viscosity @ 25°C: ~250 poise
Specific Gravity @ 25°C: ~1.2
Recommended Application Temperature: 15–25°C
Properties (Cured)
Tensile Strength: ~74 MPa
Elongation at Break: ~4.7%
Barcol Hardness: ~36
Flexural Strength: ~110 MPa
Flexural Modulus: ~2800 MPa
Heat Deflection Temperature (HDT): ~63°C
Processing & Application
Crystic® Gelcoat LS 97PA is pre-accelerated and designed for spray application.
Recommended catalyst: 2% Butanox® M-50 or equivalent
Recommended wet film thickness: 600–800 microns
Spray temperature: 15–25°C
Apply using controlled spray passes to build film thickness gradually and ensure consistent surface quality. Post curing is recommended to achieve optimum weathering, mechanical, and water-resistance performance prior to placing parts into service.
Packaging & Storage
Packaging:
Natural – 20 kg pail
White – 25 kg pail
Storage:
Store in original, sealed containers under cover and out of direct sunlight.
Recommended storage temperature below 25°C.
Product must not be frozen.
ATL Technical Support
ATL Composites provides local technical support, spray setup guidance, and surface finish optimisation advice to help ensure Crystic® Gelcoat LS 97PA delivers consistent cosmetic and long-term performance.
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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