Gflex 655 9.5 Gallon Kit

G/flex Epoxies are toughened, resilient two-part epoxies engineered for a superior grip to metals, plastics, glass, masonry, fiberglass, and wet and difficult-to-bond woods. G/flex Epoxies are available in two consistencies. G/flex 650 Epoxy is a liquid epoxy with a honey-like consistency. G/flex 655 Epoxy Adhesive is pre-thickened with a consistency similar to gel toothpaste. Both have an easy-to-use 1:1 mix ratio. G/flex provides a relatively long open working time, yet it cures quickly and can be used in cool temperatures.

G/flex Epoxies are toughened to make them resilient and impact resistant, giving them the ability to make structural bonds that can absorb the stresses of expansion, contraction, shock, and vibration. With a modulus of elasticity of 150,000 psi, G/flex is more flexible and can deflect further before breaking than WEST SYSTEM 105/205, while being much stiffer than typical adhesive sealants.

G/flex adheres tenaciously to difficult-to-glue hardwoods, both tropical and domestic varieties. It can be used to bond metals, plastics, glass, masonry, and fiberglass. G/flex is ideal for repairs to aluminum boats and polyethylene and ABS canoes and kayaks. It can also be used to wet out and bond fiberglass tapes and fabrics. G/flex 650 can be modified with WEST SYSTEM fillers and additives and added to other WEST SYSTEM epoxies to improve their toughness and flexibility.

Mix ratio by volume 1:1

Mix ratio by weight 1.2:1

Mix viscosity: G/flex 650 (at 72°F) ASTM D-2393 15,000 cps - G/flex 655 gel

Pot life (100g at 72°F) 45 minutes

Working time 75 minutes

Initial cure 3 to 4 hours - Workable cure* 7 to 10 hours

Minimum recommended temperature 40°F (4°C)* - Wait 24 hours before subjecting to high loads.

Specific gravity 1.11

Hardness (Shore D) ASTM D-2240 75

Compression yield ASTM D-695 5,270 psi

Tensile strength ASTM D638 3,440 psi

Tensile elongation ASTM D-638 32.7%

Tensile modulus ASTM D-638 1.44E+05 psi

Flexural strength ASTM D-790 5,190 psi

Heat deflection temperature ASTM D-648 127°F

Ultimate Tg 154°F

Storage/Shelf Life-Store at room temperature. Keep containers sealed when not in use to prevent contamination. With proper storage, resin and hardener should remain usable for several years.