West System's G/Flex is a toughened, versatile liquid epoxy designed for permanent waterproof bonding of fibreglass, ceramics, metals, plastics, damp and difficult-to-bond woods. G/Flex has a modulus elasticity of 150,000 psi, making it a little more flexible than standard epoxies and polyester, but much stiffer than adhesive sealants.

This gives G/Flex the ability to make structural bonds that can absorb the stress of expansion, contraction, shock and vibration. The epoxy is ideal for bonding dissimilar materials can be modified with West System fillers and additives, or used to wet-out fibreglass tapes and fabrics.

Mixed at a 1:1 ratio, the 2-part epoxy gives you 46 minutes of pot life at 22 degrees and an open working time of 60-75 minutes. The West System epoxy reaches an initial cure in 3-4 hours and a workable cure in 7-10 hours.