2-Pack Wood Cork Stopper Plugs for Thermos & Vacuum Flask

2-Pack Wood Cork Stopper Plugs for Thermos & Vacuum Flask

Keep your favorite thermos, vacuum flask, or kettle sealed tight with these natural wood cork stopper plugs. This convenient 2-pack gives you a spare on hand so you're never caught without a secure lid. Crafted from durable, food-safe natural wood, these cork plugs create a snug, leak-resistant seal that helps maintain your beverage's temperature — hot or cold — for longer.

Whether your original stopper has worn out, gone missing, or simply needs replacing, these universal-style cork plugs are an easy, affordable fix. The smooth, rounded wood construction fits comfortably in hand and inserts firmly into standard flask and thermos openings for a dependable seal every time.

Key Features

• Set of 2 — always have a backup ready
• Natural wood construction — durable, food-safe, and long-lasting
• Secure, leak-resistant seal — fits snugly into thermos and vacuum flask openings
• Universal replacement — compatible with many standard thermoses, kettles, and vacuum flasks
• Easy to insert and remove — smooth finish for comfortable, hassle-free use
• No high-concern chemicals — safe for everyday beverage use

Specifications

• Material: Natural Wood (Cork)
• Quantity: 2 Pieces
• Use: Thermos, Vacuum Flask, Kettle Stopper Replacement
• Country of Origin: Made in China

Complete Your Kitchen Setup

Pair these cork stoppers with other great kitchen and drinkware accessories from our store:

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Learn More About Safe Drinkware

For guidance on food-safe materials used in beverage containers, visit the U.S. Food & Drug Administration — Food Contact Substances resource.

Learn more: List of generic and genericized trademarks

Frequently Asked Questions

Q: What size thermos or vacuum flask do these wood cork stopper plugs fit?

A: These wood cork stopper plugs are designed to fit many standard thermos and vacuum flask openings. Because flask neck diameters can vary by brand and model, we recommend measuring your flask's inner opening diameter before purchasing to ensure a proper fit. The natural cork wood material provides a snug, flexible seal for a secure hold.

Q: Are these wood cork stoppers safe for hot beverages?

A: Yes! The natural wood cork material is food-safe and suitable for use with both hot and cold beverages. The stopper is designed to seal the flask opening without direct prolonged immersion in liquid, keeping your drinks at the right temperature while remaining safe and durable.

Q: Can I use these cork plugs to replace a broken or lost thermos lid?

A: Absolutely. These wood cork stopper plugs are ideal as a replacement for worn-out, broken, or missing thermos and vacuum flask stoppers. The 2-pack ensures you always have a spare on hand, making them a practical and affordable accessory for kettle and flask maintenance.