West System G/Flex 655 Epoxy Adhesive Repair Kit, 2 Quarts
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West System G/Flex 655 Epoxy Adhesive Repair Kit — 2 Quarts
G/Flex 655 is a toughened, flexible liquid epoxy engineered for permanent, waterproof bonds on the materials that give standard epoxies trouble — wet or oily wood, plastics, metals, ceramics, and fiberglass. With 45 minutes of open working time and a 1:1 mix ratio, it's forgiving enough for complex repairs and strong enough to last.
Key Features
- Flexible yet structural — 150,000 PSI modulus of elasticity absorbs expansion, contraction, shock, and vibration without cracking
- Bonds dissimilar materials — ideal where two different substrates meet (e.g. metal fitting to fiberglass hull, plastic to wood)
- Waterproof and permanent — fully cured bond resists moisture, fuel, and most solvents
- Compatible with WEST SYSTEM® fillers and additives — can be thickened, faired, or used to wet-out fiberglass tape and fabric
- Simple 1:1 mix ratio — equal parts resin and hardener, no pumps required at this size
- 45-minute working time at room temperature; initial cure in 7–10 hours, full cure in 24 hours
Best Use Cases
- Bonding through-hull fittings, ports, and hardware to fiberglass decks
- Repairing delaminated or waterlogged wood in stringers, transoms, and decks
- Adhering dissimilar materials — aluminum, stainless, HDPE, and fiberglass in a single joint
- Wet-out and laminating fiberglass tape over structural repairs
- Bonding flexible substrates where a rigid epoxy would crack under load
Also Available In
- G/Flex 655 Epoxy Adhesive Repair Kit (standard)
- G/Flex 655 Epoxy Adhesive Repair Kit, 2 Gallons
- G/Flex 655 Epoxy Adhesive Repair Kit, 1 oz.
- West System G/Flex Epoxy Bottles, 8 oz.
- West System G/Flex C65032 Epoxy, 32 oz.
- West System G/Flex Epoxy 2 Gallon Kit
Parts Desk Insights
The 2-quart kit is the go-to size for mid-scale repair projects — large enough for a full transom repair or multiple bonding jobs, without committing to a gallon. Customers tackling fiberglass-to-metal bonding (e.g. mounting hardware, through-hulls, or keel repairs) consistently choose G/Flex 655 over standard epoxy because its flexibility prevents joint failure under load cycling. If the repair involves wet or contaminated wood, G/Flex's superior penetration into damp substrates makes it the right call over 105-series epoxy. For smaller touch-up jobs, consider the 1 oz. kit; for large structural work, the 2-gallon kit offers better value.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.