Boost durability on Prusa’s neXtruder platform with the Phaetus Silicon-Carbide (SiC) Nozzle. The design pairs a SiC nozzle with an EndCoat-treated heatbreak concept to deliver dual wear-resistant protection, extending hotend service life significantly compared with standard hardened-steel setups. Available for MK4, MK3.9, and XL in 1.75 mm filament and 0.4 / 0.6 mm nozzle sizes, with a manufacturer-stated maximum printing temperature of 300 °C.
Why it stands out
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SiC + EndCoat synergy: Phaetus highlights double wear protection and claims up to 7× longer service life than ordinary hardened-steel nozzles.
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neXtruder-specific fit: Variants are tailored for Prusa MK4, MK3.9, and XL toolheads.
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High-temp capable: Rated up to 300 °C; suitable for a wide range of materials within your printer’s limits.
Specs
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Printer compatibility: Prusa MK4 / MK3.9 / XL (neXtruder)
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Filament: 1.75 mm
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Nozzle sizes: 0.4 mm / 0.6 mm
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Max printing temperature: 300 °C
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Material notes reported by Phaetus: thermal conductivity ~105 W/m·K; linear expansion ~18 µm/m·°C (manufacturer-stated values)
