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West System G/Flex Epoxy (2-4oz)

4.8 out of 5 stars 1,031 ratings
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Compatible Material Fiberglass, Ceramic, Plastic
Color Clear
Brand West System
Package Information Bottle
Item Volume 236 Milliliters

About this item

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  • G/flex 650 is a toughened, versatile, liquid epoxy for permanent waterproof bonding of fiberglass, ceramics, metals, plastics, damp and difficult-to-bond woods.
  • G/flex adheres tenaciously to difficult- to-glue hardwoods, both tropical and domestic varieties. This is important since many of the exotic and tropical species now being used to replace traditional woods present bonding challenges.
  • G/flex has the ability to glue damp woods. It can be used on wet surfaces, even underwater when applied with specific techniques.
  • Country of origin: United States
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Frequently bought together

  • WEST SYSTEM G/Flex Epoxy (2-4oz)
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  • Great Planes Epoxy Mixing Cups (50-Piece)
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  • West System 807-2 Syringes
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Product Description

WEST SYSTEM Six10 Thickened Epoxy Adhesive WEST SYSTEM G/flex 650 Toughened Epoxy Adhesive G/flex 655 Thickened, Toughened Epoxy Adhesive WEST SYSTEM G/5 Five-Minute Adhesive
Six10 Thickened Epoxy Adhesive G/flex 650 Toughened Epoxy G/flex 655 Thickened Epoxy Adhesive G/5 Five-Minute Adhesive
Mix ratio, resin:hardener NA (dispenses at proper ratio) 1:1 1:1 1:1
Pot life @72°F 42 minutes (in static mixing wand) 45 minutes 45 minutes 3-5 minutes
Working time, thin film @72°F 42 minutes 45 minutes 45 minutes 3-5 minutes
Cures to a solid, thin film @72°F 5 to 6 hours 3 to 4 hours 3 to 4 hours 5 minutes
Cures to working strength @72°F 1 to 4 days 7 to 10 hours 7 to 10 hours 15 minutes
Minimum working temp 50°F (4°C) 40°F (4°C) 40°F (4°C)
Hardness (Shore D) ASTM D-2240 80.6 75 75
Compression yield (ASTM D-685 9,690 psi 5,270 psi 5,270 psi
Tensile strength ASTM D-638 6,440 psi 3,440 psi 5,270 psi
Flexural strength ASTM D-790 11,300 psi 5,190 psi 5,270 psi

Product description

G/flex Epoxy Adhesive belongs in every boater's repair kit. Get a waterproof, flexible bond on plastic, fiberglass, aluminum, etc. The 650-8 kit gives you two 4 oz. bottles of the liquid epoxy. The 650-8 kit contains 4 oz. each of viscous liquid G/flex 650 resin and hardener. Mixing ratio is 1: 1. Mixed G/flex 650 is of a heavy "syrup" consistency. It will run off a vertical surface. 650 can be thickened with inert filling materials. G/flex is a product of West System, a division of Gouge on Brother's, The Gouge on brothers have been using epoxy resins in boat building and repair for some 50 years. It makes structural bonds that can absorb the stresses of expansion, contraction, shock and vibration. In addition to its superior bonding to many different materials and its ability to bond dissimilar materials, G/flex is much more flexible than other epoxies. This is an excellent property for boat building and repair. Polyethylene (HDPE) is a common kayak and canoe material. Its molecular structure resists gluing by most adhesives. G/flex solves the problem; it bonds well to polyethylene and ABS plastics. At 72 F pot life is 45 minutes. Working time is 75 minutes. It cures to a solid in three hours and cures to its full strength in one to two days. It cures faster in warmer temperatures and slower in colder ones. Clean up is simple. Wipe up spills with absorbent materials. Clean residue before it cures, with alcohol or acetone. G/flex adheres tenaciously to difficult-to-glue hardwoods, both tropical and domestic varieties. It has the ability to glue damp woods. It can be used on wet surfaces, even underwater when applied with specific techniques. G/flex does indeed belong in every boater's repair kit. The more you use it, the more uses you'll find for it - with your boating gear and other sporting and household items. It's easy to mix and use. The instructions that come with the kit are top notch.

Product details

Size:UNITS
  • Date First Available ‏ : ‎ June 18, 2019
  • Manufacturer ‏ : ‎ WEST SYSTEM
  • ASIN ‏ : ‎ B07T7KKYKC
  • Customer Reviews:
    4.8 out of 5 stars 1,031 ratings

Customer Questions & Answers

Customer reviews

4.8 out of 5 stars
4.8 out of 5
1,031 global ratings
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Top reviews from the United States

Reviewed in the United States on January 9, 2020
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21 people found this helpful
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Reviewed in the United States on July 25, 2016
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Reviewed in the United States on February 10, 2020
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7 people found this helpful
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Reviewed in the United States on May 31, 2018
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Reviewed in the United States on February 22, 2018
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Reviewed in the United States on January 16, 2019
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Top reviews from other countries

DC Knives
5.0 out of 5 stars Very well suited for knifemaking
Reviewed in Canada on May 2, 2018
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5 people found this helpful
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J
3.0 out of 5 stars Product does what is says but still isn't suitable for some types of repairs
Reviewed in Canada on June 6, 2021
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BobNod
5.0 out of 5 stars Tough stuff.
Reviewed in Canada on October 15, 2020
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Dany Salvail
5.0 out of 5 stars Great for dinghy and boat repairs requiring flexible joints.
Reviewed in Canada on August 31, 2018
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2 people found this helpful
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JPS_5
5.0 out of 5 stars Worked well
Reviewed in Canada on September 13, 2018
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2 people found this helpful
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