Artillery Hornet PTFE Tube – ∅2 x ∅4 / 21 mm

Pre-cut PTFE tube segment (∅2 mm ID × ∅4 mm OD, 21 mm length) for the Artillery Hornet. Sits inside the hotend/heatbreak to guide 1.75 mm filament with low friction and provide thermal isolation for stable feeding.

Key Features

Compatibility: Artillery Hornet (hotend liner).
Dimensions: ∅2 mm inner, ∅4 mm outer, length 21 mm.
Function: Low-friction liner for 1.75 mm filament; helps maintain a consistent melt path.
Direct 1:1 replacement for a burnt, deformed, or worn PTFE insert.
Improves extrusion reliability and reduces jams/stringing when renewed.
Installation tip: power off and cool; ensure square ends and full seating against the nozzle/heatbreak.