alfi® – Isoliergefäße der Premiumklasse

How to Replace Sealing Rings on Your PURE Drinking Mug

How to Replace Sealing Rings on Your PURE Drinking Mug

By alfi® – Isoliergefäße der Premiumklasse | Published: 2026-10-24

Category: How-to Guides

Learn how to replace the sealing rings on your alfi PURE Drinking Mug 0.5L to stop leaks and restore insulation. Step-by-step guide with tips.

Quick Answer

You can replace the sealing rings on your alfi PURE Drinking Mug 0.5L yourself using the genuine alfi replacement part. This restores the seal and prevents leaks.

Why Replace the Sealing Rings?

Over time, the sealing rings on your PURE Drinking Mug can wear out, leading to leaks or reduced insulation. Replacing them is a simple, low-cost fix that extends the life of your mug.

Using genuine alfi spare parts ensures a perfect fit and reliable performance. The Dichtungsringe für PURE Drinking Mug 0,5l (SKU: 9100000053) are designed specifically for this model.

What You'll Need

You only need the replacement sealing ring set and your hands. No tools are required, but a soft cloth can help grip the ring if it's slippery.

Step-by-Step Replacement Guide

  1. Remove the Old Sealing Ring: Unscrew the lid completely. Gently pry the old sealing ring out of its groove using your fingers or a soft tool. Avoid scratching the plastic. Check if the old ring is brittle or cracked – that confirms replacement was needed.
  2. Clean the Groove: Wipe the groove with a damp cloth to remove any debris or residue. Let it dry completely before inserting the new ring. A clean groove ensures the new ring seats evenly and doesn't leak.
  3. Insert the New Sealing Ring: Place the new ring into the groove, pressing it evenly around the circumference. Make sure it sits flat and isn't twisted. A twisted ring is the most common cause of leaks after replacement – double-check it's seated straight.
  4. Reassemble and Test: Screw the lid back onto the mug. Fill with water, close tightly, and turn upside down over a sink to check for leaks. If it still leaks, remove the ring and re-seat it, ensuring no gaps.

Replacement Part Details

  • Dichtungsringe für PURE Drinking Mug 0,5l: These sealing rings are a replacement part for the alfi PURE Drinking Mug 0.5 l, supplied under the alfi brand as a spare part. Using the genuine alfi part guarantees the correct size and material, so your mug seals properly and stays leak-free.
    Dichtungsringe für PURE Drinking Mug 0,5l
    Dichtungsringe für PURE Drinking Mug 0,5l

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