Product Technical Catalogue

G/Flex Epoxy

Toughened, flexible epoxy
  • Description
  • Sizes
  • MSDS
  • Tech Data

G/flex is a toughened, versatile, liquid epoxy for permanent waterproof bonding of fiberglass, ceramics, metals, plastics, damp and difficult-to-bond woods.


With a modulus of elasticity of 150,000 PSI, it is a bit 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. It is ideal for bonding dissimilar materials. It can be modified with West System fillers and additives, and used to wet-out fiberglass tapes and fabrics. 

650-32: 16 oz. each of resin & hardener (32 oz total)
650-8: 4 oz. each of resin & hardener (8oz total)

Mixed at a 1:1 ratio, G/flex gives you 45 minutes of working time at room temperature. It reaches an initial cure in 7 to 10 hrs and full cure in 24 hrs.