Gasket Replcement for Bincoo S3 Lever Espresso Maker

Variant 1 — Group Head Gasket 

1 piece. Located at the connection between the group head and the portafilter handle — the contact surface where the portafilter locks into the brew head. This seal prevents leaks during extraction. It is the most commonly worn seal and the one most often replaced.

Variant 2 — Piston Seal ×2

2 pieces per set. Located on the piston inside the brew chamber. These seals sit on the piston head and create the pressure seal when you press down the lever. Both seals in the set are identical and should be replaced at the same time for consistent pressure.

Variant 3 — Gasket + Piston Seal Set

3 pieces total: 1 group head gasket + 2 piston seals. This combo covers the two most commonly replaced seal locations — the group head–portafilter connection and the piston. A practical choice for routine maintenance.

Variant 4 — Upper Chamber Seal (Rarely Needed)

1 piece. Located at the upper part of the brew chamber. This seal is not subject to frequent wear and usually does not need replacement. Order only if your original seal is damaged or leaking.

Variant 5 — Lower Chamber Seal (Rarely Needed)

1 piece. Located at the lower part of the brew chamber. Like the upper chamber seal, it rarely wears out and usually does not need replacement. Order only if damaged or leaking.

Variant 6 — Full Seal Kit

5 pieces total: 1 group head gasket + 2 piston seals + 1 upper chamber seal + 1 lower chamber seal. Covers all seal locations in one set — the best value if you want to replace every seal at once or keep spares on hand.