Gasket for BIALETTI 0800007 coffee maker — rubber seal 91 mm, white

Replacement rubber gasket designed for BIALETTI aluminum moka pots with an 18-cup capacity. This sealing ring is positioned between the upper chamber and the filter basket to ensure a tight seal, maintain correct pressure during extraction and reduce the risk of leaks when brewing stovetop espresso-style coffee. It is intended as a wear-and-tear spare part for routine maintenance and for restoring consistent brewing performance.

Advantages

The gasket is made from heat-resistant rubber formulated for contact with hot water and steam, providing stable elasticity under repeated heating cycles. Its precise dimensions and consistent thickness deliver a uniform seal that supports proper pressure buildup in the moka pot, helping to preserve extraction quality. As a dedicated replacement part for 18-cup aluminum models, it simplifies maintenance and avoids improvisations that can impair safety or flavor.

Suitable for

• Owners of BIALETTI aluminum moka pots with an 18-cup capacity needing a replacement sealing ring
• Routine maintenance to restore proper pressure and prevent leaks
• Replacing a hardened, cracked or deformed gasket to maintain brew quality

Key specifications

• Material: heat-resistant rubber suitable for hot water and steam exposure
• Designed fit: compatible with 18-cup aluminum moka pot geometry
• Function: provides sealing between upper chamber and filter basket to maintain pressure
• Durability: intended for regular domestic use as a wear part subject to periodic replacement

How to use

Allow the moka pot to cool and empty any coffee grounds and water before replacing the gasket. Remove the old gasket and clean the seating groove of residues or oils. Fit the new rubber ring into the groove so it sits evenly without twists or gaps; check that the filter basket and upper chamber assemble smoothly and form a uniform seal. Reassemble the moka pot and perform a short test brew to confirm there are no leaks and that pressure builds normally.

Usage recommendations

Inspect the gasket periodically and replace it if it shows signs of hardening, cracking or loss of elasticity. Avoid using abrasive cleaners or sharp tools when fitting the ring. Use fresh water and properly ground coffee to reduce residue buildup that can accelerate wear.