The G2G eco wine closure represents a new era for wineries committed to sustainability and quality. Combining premium aesthetics with zero compromise on purity, it’s designed to both preserve and elevate your wines. Engineered for longevity and environmental responsibility, this closure not only protects your product—it reflects your brand’s values.
Today’s wine consumers are increasingly environmentally savvy. They seek brands that don’t just sell wine, but also stand for sustainable wine packaging. Wineries must adapt to shifting market expectations and tightening regulations. An eco wine closure signals your commitment to sustainability, while delivering superior performance and product protection.
Wineries committed to long-term environmental practices can refer to Sustainable Winegrowing Australia to align their packaging strategies with national certification frameworks.
An eco wine closure is a bottle seal that prioritises recyclability, toxicity-free materials, and purity. It avoids plastics, glues, and composite materials, ensuring wine contacts only inert glass. This technology guarantees no off-flavours, no chemical leaching, and no compromise to aroma—offering a clean, high-quality experience from corking to first sip.
In its most recent market trends report, Wine Intelligence confirmed that sustainable packaging plays a key role in consumer decision-making across the UK, Australia, and North America.
For wineries that prioritise scientific validation, resources from the Australian Wine Research Institute support this closure’s industry-leading OTR benchmarks and sustainability claims.
Our patented glass-to-glass wine closure eliminates all synthetic contact points. Crafted from 100% recyclable glass, the G2G closure ensures the wine is never compromised.
With over 15 years of testing and a 50+ year performance lifespan, this eco wine closure is revolutionising how the world protects premium wine.
This is an Australian invention with global capability. Developed by the Tremayne Consulting Group, it draws on over 100 years of expertise in advanced manufacturing and product engineering.
Designed to meet the needs of both boutique producers and export-ready giants, this eco wine closure represents the best of local innovation with international relevance. It’s a truly innovative wine closure that’s changing the industry.
While proudly Australian, the G2G system can be trusted across markets—from New Zealand to California and Spain. It’s ideal for vintages targeting high-value retail and export markets where sustainable wine packaging is a regulatory or buyer expectation. This is more than a seal—it’s an advantage in the global wine economy.
Wine is alive—and vulnerable. Every interaction with non-inert materials like synthetic liners or cork glue presents risks. With a glass wine seal, your wine is in contact only with neutral, non-reactive material, ensuring a clean expression from bottle to glass. This closure eliminates uncertainty and reinforces your brand’s quality promise.
This isn’t theory. Independent testing demonstrates that G2G closures provide consistent oxygen control for over half a century. Unlike corks that degrade or screw caps that leach, this closure offers reliability that spans generations. Perfect for age-worthy vintages, collector releases, and long-term cellaring strategies.
Glass can be recycled indefinitely without losing integrity. Unlike cork and metal composites, glass wine seals don’t degrade in quality through reuse. Adopting G2G closures helps your winery align with circular economy principles and significantly reduce its environmental footprint.
These closures aren’t just promising—they’re proven. More than 15 years of laboratory testing confirm the stability, performance, and recyclability of G2G systems. Results meet or exceed ISO benchmarks, offering confidence to producers seeking certified sustainable packaging alternatives.
If your vineyard is certified organic or biodynamic, this closure is an ideal match. Free of adhesives, polymers, and leachable toxins, the G2G system supports your product’s purity and helps maintain full certification compliance. It’s a true solution for organic wine packaging and long-term quality assurance.
Our current offerings include:
Boutique production runs of up to 100 bottles using our cork-level oxygen transmission rate (OTR) closure
Boutique production runs of up to 100 bottles using our near-zero OTR closure
Larger format availability up to 2,000 bottles with near-zero OTR
Opportunities for investment in the revolutionary G2G wine closure system
Whether you’re a heritage label or a modern boutique brand, this is the closure of the future. Its distinct look, sustainable credentials, and world-class performance make G2G an invaluable tool in positioning your winery as a forward-thinking industry leader.
