• Description
  • Quick Links
  • Resources
  • Relevant Videos
  • Faq
  • Related Products
  • Where To Buy

G/flex 650-K Repair Kit

G/flex 650 Epoxy is the result of years of experimentation to develop a toughened epoxy that was simple to use and would adhere tenaciously to a variety of materials under difficult conditions.

G/flex 650 is all that, and more. It is a marine-grade glue that can be accurately mixed in small batches with a simple 1:1 mix ratio. It has the advantage of a long open working time and a relatively short cure time.

G/flex 650 is, first of all, a high-strength epoxy—designed for permanent, waterproof, structural bonding. Furthermore, G/flex has a modulus of elasticity of 1.03 GPa, which gives G/flex the toughness to make structural bonds that can absorb the stresses of expansion, contraction, shock, and vibration.

G/flex adheres tenaciously to difficult-to-glue hardwoods, both tropical and domestic varieties—white oak, Ipe, teak, greenheart, purpleheart and black walnut to name a few. G/flex also has the ability to glue damp woods. It can be used on wet surfaces, even underwater when applied with specific techniques.

G/flex is ideal for bonding a variety of other materials, including dissimilar ones—metals, plastics, glass, masonry as well as fibreglass.

Users can blend G/flex 650 Epoxy Adhesive with WEST SYSTEM 105 Resin-based epoxy combinations to modify toughness, flexibility, cure speed, viscosity, strength, and elongation. The epoxy blend will have properties/characteristics derived from both epoxy systems, roughly in proportion to the percentage of each epoxy in the blend.

The G/flex 650-K Repair Kit


  • Small hole repair
  • Repairing splits, cracks and delaminations
  • Plastic canoe & kayak repair
  • Aluminium boat seam repair
  • Wood construction and repair
  • Joining wood

G/flex 650-K Repair Kit Includes:

The 650-K G/flex Repair Kit contains:

  • 118ml G/flex 650 Resin
  • 118ml G/flex 650 Hardener
  • 2x Reusable mixing stick/applicators
  • 2x 12cc Syringes
  • 4g Adhesive filler
  • 2x Mixing cups
  • 2 Pairs of disposable gloves

G/flex Features


Modifying with fillers and additives makes WEST SYSTEM epoxy extremely versatile for a wide variety of bonding and coating applications. Epoxy can be thickened to the ideal consistency needed for a particular job. Epoxy thickened with adhesive (high-density) fillers strengthens structural bonds, bridges gaps, and fills voids. Epoxy thickened with fairing (low-density) fillers is easily sanded and shaped after it cures.


The term “laminating” refers to the process of bonding numbers of relatively thin layers, like plywood, veneers, fabrics, or core material to create a composite. A composite may be any number of layers of the same material or combinations of different materials. Methods of epoxy application and clamping will differ depending on what you are laminating.