Thermos Vacuum Flask - Stainless King - 1.2 Litre - Silver

Thermos 4003.205.120 Vacuum Flask Stainless King Flask 1.2 Litre Stainless Steel Matte. Top rack d...

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OnBuy.comThermos 4003.205.120Â Vacuum Flask Stainless King Flask 1.2Â Litre Stainless Steel Matte
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Product Information

Full details

This Thermos Stainless King 1.2 Litre Vacuum Flask is designed for individuals who need to keep beverages at a specific temperature for extended periods, such as outdoor enthusiasts, commuters, and busy professionals. Its key benefit is superior insulation, maintaining hot drinks for 24 hours and cold drinks for 24 hours. A minor caveat is its 1.2-liter capacity, which might be larger than needed for single servings. Key features include double-walled stainless steel construction, a practical screw-cap with an integrated drinking cup, and complete airtightness for leak-free transport.

All features

ColourSilver
Model Part Number4003.205.120
BrandThermos

Extended Product Information

FAQs

Is the entire flask dishwasher safe?

No, only the flask body is recommended for the top rack of your dishwasher. The lid and cup should be hand-washed.

How long does the insulation guarantee last?

Thermos provides a 5-year warranty specifically on the insulation performance of this flask.

Can I put carbonated drinks in this flask?

It is not recommended to store carbonated beverages in this vacuum flask, as pressure can build up and potentially cause leaks or make the lid difficult to open.

What is the benefit of the screw-cap seal?

The screw-cap seal ensures a completely airtight closure, which is critical for maintaining temperature and preventing leaks during transport.

How do I clean the inside of the flask effectively?

Use warm, soapy water and a bottle brush. For stubborn residue, a mixture of baking soda and water can be used as a gentle cleaning paste. Rinse thoroughly and air dry completely.

What material is the flask made from?

The flask is constructed from durable, double-walled stainless steel.

Can the lid be used as a cup?

Yes, the twist-off lid is designed to function as a drinking cup.

Troubleshooting

Flask not keeping drinks hot/cold as long as expected

Ensure the lid and screw cap are fully tightened to create an airtight seal. Pre-heat the flask with hot water or pre-chill with cold water for at least 5 minutes before filling with your desired beverage. Check for any visible damage to the flask body or seals.

Difficulty opening or closing the lid/cup

Ensure threads are clean and free of debris. If the seal feels too tight, try gently wiping the threads with a soft, damp cloth. Avoid forcing the lid, as this can damage the threads.

Leaking from the lid

Verify that the lid is screwed on completely and tightly. Inspect the rubber seal within the lid for any damage or debris. Ensure the flask is not overfilled beyond the indicated fill line.

Internal condensation or moisture

This can occur if the vacuum seal is compromised. Ensure the flask has been properly dried after washing. If moisture persists, it may indicate a damaged vacuum seal, and you should contact customer service under warranty.

Pros and Cons

Pros

  • Exceptional 24-hour hot and cold retention
  • Durable and robust stainless steel construction
  • Convenient integrated drinking cup
  • Completely leak-proof design
  • Stylish matte silver finish
  • Easy to clean (top rack dishwasher safe)

Cons

  • 1.2 Litre capacity may be too large for some users
  • Screw-cap seal requires multiple turns to open and close
  • Stainless steel can be susceptible to dents if dropped hard
  • Integrated cup size is relatively small

Setup, Compatibility & Care

Setup: The Thermos Flask is ready for use straight out of the box. Ensure the lid and cup are securely tightened before transporting.

Compatibility: This flask is designed for beverages only. It is compatible with both hot and cold liquids. Avoid filling with carbonated beverages as pressure can build up.

Care Instructions:

  1. Cleaning: The flask body is top-rack dishwasher safe. For best results and longevity, hand washing is recommended. Use warm, soapy water and a bottle brush to clean the interior. Rinse thoroughly and allow to air dry with the lid off.
  2. Lid and Cup: Wash the lid and cup components by hand with warm, soapy water. Ensure all parts are completely dry before reassembling.
  3. Storage: Store the flask with the lid off to prevent odors and ensure the interior is fully dry.
  4. Avoid Abrasives: Do not use abrasive cleaners, scouring pads, or harsh chemicals, as they can damage the stainless steel finish.

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