Is Iron Flask dishwasher safe?
Not dishwasher safe✓ Verified
Iron Flask is not dishwasher safe.
Quick facts
| Dishwasher safe? | No — Not dishwasher safe |
|---|---|
| Category | Drinkware |
| Source | Manufacturer guidance / material science |
| Last checked | 2026-07-28 |
Why
Iron Flask bottles are made with a powder-coated exterior and a stainless steel interior. The manufacturer explicitly recommends hand washing only, as the dishwasher's heat and detergents can damage the powder coating and compromise the vacuum insulation.
How do you wash Iron Flask?
Hand wash with warm, soapy water and a soft sponge. Rinse thoroughly and air dry with the cap off.
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Popular checks
Last updated 2026-07-28. General guidance — always check your product’s care label. How we verify · Dishwasher care guides.