This item is eligible for free shipping on orders over $99.99

Product Details

West System G/Flex liquid epoxy is a toughened, versatile adhesive designed for permanent, waterproof bonds on fiberglass, ceramics, glass, masonry, metals, plastics, damp and difficult-to-bond woods. G/flex epoxy is resilient enough to bond dissimilar materials and flexible enough to absorb the stress of expansion, contraction, shock and vibration.

Liquid G/Flex 650 is a two-part (resin and hardener) mixed at a 1:1 ratio. Choose from 4 different sizes of resin/hardener: 8 oz. kit, 32 oz. kit, 2 gallon kit, 4.75 gallon resin only, and 4.75 gallon hardener only.

Info & Guides

Technical Information

G/Flex 650 Features

  • Simple 1:1 mix ratio makes G Flex easy to use
  • Long open working time of 45 minutes at room temperature.
  • G/flex reaches a working cure in 7-10 hours and a full cure in 24 hours.

<b>Kit Contents</b>

  • WSY-650-8: 8 oz. of mixed epoxy (one 4 oz. resin and one 4 oz. hardener) in a plastic bag.
  • WSY-650-32: 32 oz. of mixed epoxy (one 16 oz. bottle of resin and one 16 oz. bottle of hardener)
  • WSY-650-2G: 2 gallons of mixed epoxy (one gallon of resin and one gallon of hardener)
  • WSY-650-CR: 4.75 gallons of RESIN ONLY
  • WSY-650-CR: 4.75 gallons of HARDENER ONLY

Epoxy Safety

  • Avoid skin contact with resin, hardener or mixed epoxy. Wear liquid-proof gloves and adequate protective clothing to keep the epoxy off your skin.
  • Avoid eye contact with resin, hardener or mixed epoxy. Wear protective glasses. In case of contact with eyes, flush with water for 15 minutes and consult a physician.
  • Avoid inhalation of vapors. Provide adequate ventilation. Wear a dust mask when sanding epoxy, especially epoxy that has not fully cured.
  • Read and follow safety information on resin and hardener containers.

Reviews for WEST System G/flex 650 Liquid Epoxy

10 of 65 Reviews

November 16, 2022

Good product
By Jabbo from South Carolina

Verified Purchase

I used to attach forearm to handle on cue. Assembly was easy.

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

April 27, 2022

Knife maker falls in love again.
By Willy McWinter from Tennessee

Verified Purchase

I use a lot of epoxy. Over the past 10 years, I have seen how many epoxies hold up with abuse on knife handles. My first impression of this product is that it much less brittle than West Systems 105 and decidedly more robust than the generic epoxies with whoever's logo on it.

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

February 6, 2022

works well. Too expensive.
By Table maker from Lancaster, PA

Verified Purchase

Set time at room temperature allows ample time to work.

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

January 6, 2022

Works great
By DC from Illinois

Verified Purchase

Making a bowl for use with liquid out of wood and so far it works great

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

July 14, 2021

repaired canoe
By jd from Roanoke, VA

Verified Purchase

this stuff worked perfect to repair old BlueHole canoe

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

April 11, 2021

Great Product!
By thedad from Myrtle Beach, SC

Verified Purchase

I have started building a few one-man boast and decided to try this adhesive. It far and above exceeded my expectation. Very easy to use with fantastic results.

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

April 11, 2021

I will buy this product again
By Axe Reclaimer from Connecticut

Verified Purchase

I like the long working time; much longer than everything I've used before yet total cure time is still 24 hrs. .

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

April 4, 2021

Easy to use and strong
By Steveo from Hanover nh

Verified Purchase

High quality epoxy

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

January 12, 2021

Used to fix snowboard
By Kate from NH

Verified Purchase

This product is working great so far, used it to fix a snowboard with splitting layers due to edge damage. Followed the directions and clamped the damaged area overnight. I've ridden it about 6 times since the fix and it's still holding, very flexible material.

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

April 7, 2020

worked like a charm !
By team pellet blaster from New York

Verified Purchase

used product to bond a steel piston to a carbon fiber tube. the piston assembly is for a HW97K spring airgun. We went through this whole rifle for a complete blueprint tune. The bond is holding up now at over 1200 shots and works perfect. I do not think anything else but G/Flex would hold up to this kind of force for thousands of cycles. Best epoxy we have ever used!. I give it 10 stars!!!!!

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?