Arc-Bottom Portafilter Cleaning Rubber – Model 02

NS300Pro Soft Rubber Insert – Model 02 (Arc Bottom, Right-Angle)

The Model 02 is the NS300Pro rubber insert for 58mm portafilter baskets with a pronounced arc (curved) bottom and straight, right-angle walls — a profile commonly found on commercial-grade and semi-commercial espresso machines. Unlike the shallower curve of the Model 01 general insert, the Model 02 is shaped to match a deeper arc profile for a more precise, flush fit during the automated cleaning cycle.

Which machines typically use an arc-bottom, right-angle portafilter?

This profile is common across commercial and prosumer machines including:

• Nuova Simonelli Appia, Oscar, and Musica series
• Astoria commercial group heads
• Wega machines
• Certain La Cimbali and Faema commercial portafilters
• Select BFC and Casadio commercial models

Not sure if Model 02 is right for you? Compare the inside bottom curve of your portafilter basket to the insert profile shown in the images — or check the NS300Pro model guide included with your machine.

When to replace your rubber insert:

• Visible cracking, tearing, or permanent deformation
• Coffee grounds no longer cleared cleanly in a single pass
• Insert no longer clips securely onto the NS300Pro cleaning head

Specifications:

• Model: 02 – Arc bottom, right-angle profile
• Compatible basket diameter: 58mm
• Compatible with: All NS300Pro metal cleaning heads
• Includes: 1 × rubber insert · Material: Food-safe soft rubber

Also available: Model 01 (general curved-bottom) for E61/Rancilio machines and Model 03 (flat-bottom, right-angle) for Breville and DeLonghi machines.