Cork Lid - Perfect Fit for Terrariums and Glass Jars - Various Sizes

Need the perfect finishing touch for your terrarium? Our natural cork lids – also known as cork bungs or stoppers – are just the thing. Available in a wide range of sizes, they’re designed to fit your container like a glove, creating a snug seal for your closed terrarium or glass jar display.

To find your fit, simply measure the internal diameter of your container’s opening and order the matching size. For example, if your jar measures 12cm across the opening, choose the 12cm cork.

These lids are made from high-quality, sustainable cork, and work beautifully for terrariums, DIY storage jars, apothecary displays, and more.

✅ Sizing Guide
Each cork is slightly tapered, so the listed size refers to the opening size it’s intended to fit. See exact measurements below:

Listing Size = Opening size (Top × Bottom × Height in mm)

2.7cm (30.2 × 24.2 × 31.8)

2.9cm (31.8 × 25.8 × 31.8)

3cm (33.3 × 27.4 × 31.8)

3.2cm (34.9 × 27.9 × 35)

4.5cm (50 × 40 × 30)

5cm (55 × 45 × 30)

6cm (65 × 55 × 30)

6.5cm (70 × 60 × 30)

7cm (75 × 65 × 30)

7.5cm (80 × 70 × 30)

8cm (85 × 75 × 30)

8.5cm (90 × 80 × 30)

9cm (95 × 85 × 30)

9.5cm (100 × 90 × 30)

10cm (105 × 95 × 30)

10.5cm (110 × 100 × 30)

11cm (115 × 105 × 30)

11.5cm (120 × 110 × 30)

12cm (125 × 115 × 30)

12.5cm (130 × 120 × 30)

13cm (135 × 125 × 30)

13.5cm (140 × 130 × 30)

14cm (145 × 135 × 30)

14.5cm (150 × 140 × 30)

15cm (155 × 145 × 30)

15.5cm (160 × 150 × 30)

16cm (165 × 155 × 30)

16.5cm (170 × 160 × 30)

17cm (175 × 165 × 30)

17.5cm (180 × 170 × 30)

18cm (185 × 175 × 30)

18.5cm (190 × 180 × 30)

19cm (195 × 185 × 30)

19.5cm (200 × 190 × 30)

19.75cm (200 × 195 × 30)

20cm (205 × 195 × 30)

20.5cm (210 × 200 × 30)

📦 Returns & Exchanges
We’re unable to refund incorrectly ordered corks, but we’re happy to arrange an exchange for the correct size – just get in touch after your order arrives and we’ll sort it out (postage fees apply).

🌿 Looking for a full terrarium setup?

Take a look at our DIY Terrarium Kits – they include everything you need to create your own miniature ecosystem.