Flat-Bottom Portafilter Cleaning Rubber – Model 03

NS300Pro Soft Rubber Insert – Model 03 (Flat Bottom, Right-Angle)

This is the official Model 03 replacement rubber insert for the NS300Pro Automatic Portafilter Cleaner system. It is precision-shaped for 58mm flat-bottom, straight-walled (right-angle) double-shot portafilter baskets — ensuring flush contact between the cleaning brush head and the inner surface of your portafilter for thorough, efficient coffee grounds removal.

Which portafilters have a flat bottom, right-angle profile?

Flat-bottom, straight-walled baskets are common across a wide range of espresso machines including many Breville (Sage) models, certain DeLonghi La Specialista variants, ECM, and commercial-style portafilters with a flat basket base. If you're unsure of your portafilter shape, compare it against the NS300Pro model guide included in your machine's instruction booklet.

How to know it's time to replace your rubber insert:

• The rubber strip is visibly cracked, torn, or deformed
• Coffee grounds are no longer cleared fully in one pass
• The insert no longer seats securely on the cleaning head

Specifications:

• Model: 03 – Flat bottom, right-angle profile
• Compatible basket diameter: 58mm
• Compatible with: NS300Pro metal cleaning heads (all generations)
• Includes: 1 × rubber insert
• Material: Soft rubber (food-safe)

Also available: Model 01 (general / arc-bottom right-angle) and Model 02 (arc-bottom right-angle) for different portafilter shapes.