- Designed for clear-coated finishes on wood, carbon fiber, and fiberglass with fewer bubbles and less sanding
- Cures crystal clear and blush-free, even in humid conditions, making it ideal for brightwork, clear laminations, and fiberglass wet-out
- Apply three or more coats in a single day without sanding between layers
- Requires fewer coats to fill fiberglass weave compared to other hardeners
- Use with paints and varnishes or as a structural adhesive when mixed with 105 Resin
- Mix ratio: 3 parts 105 Resin to 1 part 207 Hardener (by volume)
- Pot life of 22 to 26 minutes at 72°F (22°C)
- Hardener Cure Temperature range is 60°F to 100°F
- Cures to solid state in 10 to 15 hours; working strength in 1 to 4 days
- Minimum recommended application temperature: 60°F (16°C)
WEST SYSTEM 207 Special Clear Hardener®
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Product Details
Storage & Shelf Life
Store at room temperature. Keep containers closed to prevent contamination.
With proper storage, resin and hardeners should remain usable for many years. After a long storage period, verify the metering accuracy of the pumps. Mix a small test batch to assure proper curing. Over time, 105 Resin will thicken slightly and will therefore require extra care when mixing. Repeated freeze/thaw cycles during storage may cause crystallization of 105 Resin. Warm resin to 125°F and stir to dissolve crystals.
Hardeners may darken with age, but physical properties are not affected by color. If clear finishing, be aware of a possible color shift if very old and new hardeners are used on the same project.
User Manual
Data Sheets
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