How to Replace Alessi Spare Part 29703 in Your Coffee Maker

By ALESSI UK: Italian Design Home Accessories, Kitchenware & Gifts | Published: 2026-10-26

Category: How-to Guides

Learn how to replace the rubber washer set (spare part 29703) in your Alessi 9090/1 coffee maker. Step-by-step guide with common mistakes to avoid.

Quick Answer

Replace the rubber washer in your Alessi 9090/1 coffee maker using spare part 29703. This set of 5 washers restores the seal and prevents leaks.

When to Replace the Washer

The rubber washer in your Alessi 9090/1 coffee maker wears out over time. If you notice water leaking around the top chamber or steam escaping during brewing, the washer likely needs replacement. Using a worn washer can affect coffee quality and safety.

What You Need

You only need the Alessi spare part 29703 set, which includes 5 rubber washers designed specifically for the 1-cup model (9090/1). No tools are required—just your hands and a clean workspace. The washers are sold as a set and not individually.

Step-by-Step Replacement Guide

Step 1: Cool and Disassemble: Ensure the coffee maker is completely cool and not under pressure. Unscrew the top chamber from the base. Remove the old rubber washer from the groove inside the top chamber lid. Common mistake: forcing the lid while hot can warp the metal. Always let it cool first.
Step 2: Clean the Groove: Wipe the groove where the washer sits with a damp cloth to remove any coffee residue or old rubber bits. Dry thoroughly. Residue can prevent a tight seal, so a clean groove is essential.
Step 3: Insert the New Washer: Take one new washer from the set. Press it evenly into the groove, ensuring it sits flat and fully seated. There should be no gaps. Do not stretch the washer; it should fit snugly without force.
Step 4: Reassemble and Test: Screw the top chamber back onto the base. Fill the lower chamber with water, add coffee, and brew as usual. Check for leaks during the first use. A small amount of steam is normal, but steady dripping means the washer is not seated correctly.

Product Facts

29703: This spare part is a rubber washer designed for the Alessi coffee maker model 9090, specifically for the 1-cup size (9090/1). Sold as a set of 5 pieces. Having a set of 5 ensures you have replacements ready for future maintenance, saving you from repeated purchases.
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