5.2cm Vacuum Flask Replacement Lid – Leak-Proof Thermos Cap

LEENKEA 5.2cm Vacuum Flask Replacement Lid – Leak-Proof & Easy Press

Keep your favourite thermos, travel mug, or thermal flask performing like new with this durable LEENKEA 5.2cm Vacuum Bottle Lid Cup. Made from food-safe PP plastic, this universal replacement cap fits any bottle with a 5.2 cm mouth diameter — perfect for replacing a cracked, lost, or ill-fitting lid without buying a whole new flask.

Why You'll Love It

• One-press convenience: Effortlessly open and close with a simple push mechanism — great for on-the-go sipping.
• Leak-proof seal: Keeps liquids securely contained so your bag stays dry during commutes, hikes, or gym sessions.
• Durable PP plastic: Resistant to deformation and built for long-term everyday use.
• Keeps drinks clean: Seals your beverage from dust, dirt, and spills when stored or in transit.
• Simple to install: Just press on — no tools or complicated assembly required.
• No high-concern chemicals: Manufactured without hazardous substances for your peace of mind.

Specifications

Package Contents

• 1 × Vacuum Bottle Lid Cup

Notes

Actual colour may vary slightly from images due to monitor settings and lighting conditions. Please allow a small measurement tolerance of ±0.1–0.2 cm. Made in Mainland China.

Pair It With These

Looking for more drinkware essentials? Check out our 1.2L Mini Electric Deep Fryer for kitchen upgrades, or browse our selection of outdoor accessories for your next adventure.

For guidance on safe materials used in food-contact products, visit the U.S. Food & Drug Administration – Food Contact Substances.

Learn more: Wine accessory

Frequently Asked Questions

Q: What bottle mouth diameter does this vacuum flask lid fit?

A: This replacement lid is designed for bottles with a mouth diameter of exactly 5.2 cm. Please measure your bottle opening before purchasing to ensure a correct fit.

Q: Is the LEENKEA vacuum bottle lid cup leak-proof?

A: Yes. The lid features a secure press-fit seal designed to prevent leaks and keep your beverages contained during travel, exercise, or everyday commuting.

Q: What material is the lid made from, and is it safe for drinks?

A: The lid is made from PP (Polypropylene) plastic and contains no high-concern chemicals, making it a safe and reliable choice for use with your drinking vessels.

Q: Can this lid replace a broken or missing thermos cap?

A: Absolutely. This lid is specifically designed as a universal replacement for damaged or missing caps on thermos bottles, vacuum flasks, and travel mugs with a 5.2 cm opening.