Keep your jug wine fresh between uses — this airtight polyseal screwcap provides a simple, secure seal for glass jugs.
The Polyseal Screwcap is designed for standard-mouth glass jugs (2L and 4L) and provides an airtight seal for short-to-medium-term wine storage between rackings or after bottling. The polyseal liner creates a reliable oxygen barrier without the need for a bung and airlock. Ideal for topping up carboys or storing reserve wine in the fridge.
- Fits standard 2L and 4L glass jug mouths
- Polyseal liner for airtight closure
- Reusable
Winemaker's Tip: Store topped-up jugs horizontally in the fridge to keep the seal moist — it maintains a tighter barrier against oxygen ingress.
Pair with our Glass Jug - 4L or Glass Jug - 2L.