West System
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WEST SYSTEM 105 Epoxy Resin
WEST SYSTEM 105 Epoxy Resin is the foundation of the WEST SYSTEM family of products and the basis for all epoxy compounds. The resin is clear, light brown and easy to flow, and is excellent for wetting wood fibers, fiberglass and various metals in combination with WEST SYSTEM hardeners.
105 resin can be cured at a variety of temperatures, resulting in a very strong and tight surface that effectively prevents moisture from penetrating the wood. Epoxy works as an excellent bonding and coating material, and when modified with fillers, it can fill holes and depressions, which can later be sanded and shaped.
When applied with a roller, the resin forms a thin, self-leveling film without bubbles. The cured epoxy surface is clear, and when coated with a two-component varnish, it creates a striking natural wood finish.
105 resin has a high flash point, making it safer to use than polyester resins. The product also does not release solvent odors or fumes.
Applications
Moisture protection of wood
Fiberglass and metal surfaces
Bonding and coating
Boat building and repair
Filling and shaping with fillers
Features
Clear and light brown epoxy resin
Easy-flowing and very moisturizing
Excellent moisture protection
Self-leveling when applied as a thin film
No solvent vapors
Safer than polyester resins
Compatibility
For use with WEST SYSTEM hardeners
There is a corresponding hardener and mini pump for each resin package size
Pack sizes marked with the letters A, B, C or E
WEST SYSTEM 205 Hardener
WEST SYSTEM 205 Hardener is the most commonly used hardener under normal working conditions, providing fast cure and excellent mechanical properties.
When 105 resin is mixed with hardener 205 in a weight ratio of five parts resin to one part hardener, the end result is a highly durable and dense surface with excellent bonding and coating properties and effective moisture protection.
Features
Fast curing
Excellent strength and cohesion
Suitable for bonding and coating
Good moisture resistance
Specifications
Mixing ratio by weight 5:1
Pot life at 25 C 10–15 minutes
Curing time at 21 C 5–7 hours
Full strength at 21 C 5–7 days
Lowest recommended working temperature 5 C
Compatible pumps 301, 306 and 309
- Epoxy resin and hardener 105A/205
- Total weight 1.2Kg
- Faster hardener
- Pot life (25°C) 10–15 minutes
- Ratio 5:1

WEST SYSTEM 105 Epoxy Resin
WEST SYSTEM 105 Epoxy Resin is the foundation of the WEST SYSTEM family of products and the basis for all epoxy compounds. The resin is clear, light brown and easy to flow, and is excellent for wetting wood fibers, fiberglass and various metals in combination with WEST SYSTEM hardeners.
105 resin can be cured at a wide range of temperatures, resulting in a very strong and tight surface that effectively prevents moisture from penetrating the wood. Epoxy works as an excellent bonding and coating material, and when modified with WEST SYSTEM fillers, it can fill holes and depressions that can later be sanded and shaped.
When applied with a roller, the resin forms a thin, self-leveling film without bubbles. The cured epoxy surface is clear, and when coated with a two-component varnish, it creates a striking natural wood finish.
105 resin has a high flash point, making it safer to use than polyester resins. The product also does not release solvent odors or fumes.
Applications
Moisture protection of wood
Fiberglass and metal surfaces
Bonding and coating
Boat building and repair
Filling and shaping with fillers
Features
Clear and light brown epoxy resin
Easy-flowing and very moisturizing
Excellent moisture protection
Self-leveling when applied as a thin film
No solvent odors or fumes
Safer to use than polyester resins
Compatibility
For use with WEST SYSTEM hardeners
There is a corresponding hardener and mini pump for each resin package size
Pack sizes marked with the letters A, B, C or E
WEST SYSTEM 206 Slow Cure
WEST SYSTEM 206 is a low viscosity slow cure product designed for use with 105 epoxy resin. It offers extended pot life and is particularly suitable for warmer conditions or extensive coating and bonding applications.
When 105 resin is mixed with 206 hardener in a weight ratio of five parts resin to one part hardener, the result is a strong, moisture-repellent and solid surface with excellent coating and bonding properties.
Features
Slow curing
Longer operating time
Excellent strength and moisture resistance
Suitable for extensive and demanding work
Specifications
Mixing ratio by weight 5:1
Pot life at 25 C: 20–30 minutes
Curing time at 21 C 9–12 hours
Full strength at 21 C 5–7 days
Lowest recommended working temperature 16 C
Compatible pumps 301, 306 and 309
- Epoxy resin and hardener 105A/206
- Total weight 1.2Kg
- Slow hardener
- Pot life (25°C) 10–15 minutes
- Ratio 5:1

Flexible epoxy for challenging bonding applications. Suitable for various arch structures and fiberglass repairs in places where the materials are subjected to heavy stress. Suitable for use with additives.
- Mixing ratio 1:1.
- Working time maximum 45min
- Wear resistance 7-10h
- Fully cured in 24 hours
- 236ml

Multi-purpose, precipitating additive for bonding, filling and grouting. Can be used to prevent resin from running off on wall and ceiling surfaces and to control the viscosity of epoxy. Often used in combination with other fillers to control the performance of epoxy mixtures, e.g. to thicken leveling compounds. Add 3–8% by weight to the epoxy-hardener mixture.
Color: off-white
- Filler mixed with epoxy
- Precipitant
- Add 3-8% by weight
- Color: Off-white
- Quantity: 60g

105 Epoxy resin
205 Hardener
- Pot life (25°C) 10–15 minutes
- Curing time (21 °C) 5–7 hours
- Curing time to maximum strength (21 °C) 5–7 days
- Lowest recommended working temperature 5° C
- Required pumps (Ratio 5:1) 301, 306, 309

A cotton fiber blend used as a precipitating additive for bonding. Microfiber-precipitated epoxy is great for wetting wood surfaces and filling voids. Add 4% to 16% microfiber by weight to your WEST SYSTEM epoxy mix.
Color: off-white
- Filler mixed with epoxy
- Precipitating additive for bonding
- Color: Off-white
- Quantity: 160g

WEST SYSTEM mini pumps and the correct epoxy mixing ratio
All epoxies are designed to be used with a specific resin to hardener ratio. The correct mixing ratio is crucial to the final strength and durability of the epoxy. Adding hardener will not speed up the curing process, but will reduce the mechanical properties of the cured epoxy.
WEST SYSTEM mini pumps are designed to make it easy to dispense the correct mix ratio and eliminate the risk of measurement errors.
Correct mixing ratio
Epoxy must always be mixed in the ratio specified by the manufacturer.
One press of the resin pump is equivalent to one press of the hardener pump
The mixing ratio is five parts resin and one part hardener by weight.
Adding too much hardener will reduce the final strength.
Benefits of WEST SYSTEM mini pumps
WEST SYSTEM mini pumps are calibrated to dispense precise amounts of WEST SYSTEM 105 resin and 205 or 206 hardener. The pumps attach directly to the resin and hardener containers, eliminating the need for manual measuring.
Accurate and easy dosing
The right mix ratio with every push
Suitable for continuous use
Reduces the risk of mixing errors
One full press of either pump dispenses approximately:
25 g resin
5 g hardener
Compatibility
Mini pumps are designed for WEST SYSTEM 105 resin and 205 or 206 hardeners
Make sure the resin, hardener and mini pumps are the same package size
The package sizes are marked with the letters A, B, C or E.
Available models
301A mini pumps for A-tanks
301B mini pumps for B-tanks
301C mini pumps for C-vessels
WEST SYSTEM mini pumps are a reliable and easy-to-use solution for properly mixing epoxy.
- West System A-series pump
- Easy attachment to West System epoxy containers
- 1 press measures the correct amount of substance
- Pumps are sold in series (A, B, C and E)

- Filler mixed with epoxy
- For the manufacture of packaging
- Sandable
- Add 20-40% by weight
- Reddish brown when hardened

Correct epoxy mixing ratio and WEST SYSTEM mini pumps
All epoxies are designed to be used with a specific resin to hardener ratio. It is very important to follow the manufacturer's recommended mixing ratio to ensure the epoxy achieves its intended strength and durability properties. Adding hardener will not speed up the curing process, but will reduce the final strength of the cured epoxy.
WEST SYSTEM mini pumps are designed and calibrated to always dispense the correct mix ratio. One press of the resin pump equals one press of the hardener pump.
Correct mixing ratio
Epoxy should always be mixed according to the manufacturer's instructions.
The mixing ratio by weight is 5 parts resin and 1 part hardener.
Adding too much hardener will weaken the properties of the epoxy.
Benefits of WEST SYSTEM mini pumps
Mini pumps are designed for accurate and easy dispensing of WEST SYSTEM 105 resin and 205 or 206 hardeners, eliminating the need for manual measuring and reducing the risk of mixing errors.
Accurate and easy dosing
The right mix ratio with every push
Attaches directly to resin and hardener containers
Suitable for continuous use
One full press of either pump dispenses approximately:
25 g resin
5 g hardener
Compatibility
Mini pumps are designed for WEST SYSTEM 105 resin and 205 or 206 hardeners
Make sure the resin, hardener and mini pumps are the same package size
The pack sizes are marked with the letters A, B, C or E.
Available models
301A mini pumps for A-tanks
301B mini pumps for B-tanks
301C mini pumps for C-vessels
WEST SYSTEM mini pumps ensure the correct mixing ratio and the best possible results.
- West System B-series pump
- Easy attachment to West System epoxy containers
- 1 press measures the correct amount of substance
- Pumps are sold in series (A, B, C and E)

- Filler mixed with epoxy
- Add 7-16% by weight
- Color: Beige
- Quantity: 50g

