Phaetus Silicone Sock Rapido 2/Rapido Plus 2/Rapido 2F UHF

Product Description

Phaetus Silicone Sock Rapido 2/Rapido Plus 2/Rapido 2F UHF is a high-temperature thermal insulation cover engineered specifically for the ultra-high flow variants of the Rapido 2 hotend series. Designed to perfectly match the extended melt zone of the Rapido 2 Ultra High Flow (UHF) heater blocks, this professional-grade silicone sock wraps securely around the heating element. By trapping thermal energy directly inside the high-power ceramic heater, it ensures absolute volumetric flow stability and prevents ambient cooling fans from causing sudden temperature drops—a critical factor when extruding filament at extreme volumetric rates.

Manufactured from premium, industrial-grade silicone with a specialized non-stick surface coating, this cover acts as an excellent shield against molten plastic buildup. It prevents the devastating “blob of death” by ensuring that leaking or curling filament cannot adhere to the delicate heater wiring or the ceramic core. Its rugged construction is rated to withstand continuous operation up to 300°C, making it highly reliable when processing advanced engineering materials.

Whether you are running a Rapido 2, Rapido Plus 2, or the heavy-duty Rapido 2F UHF toolhead on a high-speed Voron Trident, this silicone sock is vital for maintaining peak thermal efficiency. It reduces the duty cycle load on your heater cartridge, saves energy, and ensures that your automated bed leveling sensors or part-cooling ducts are completely shielded from radiant hotend heat.

Key Features

• Optimized UHF Melt Zone Geometry: Precisely molded to fit the elongated heater blocks of the Phaetus Rapido 2/Rapido Plus 2/Rapido 2F  UHF, and Rapido 2F UHF hotends.

• Superior Thermal Efficiency: Concentrates heat within the nozzle assembly, preventing powerful part-cooling fans from chilling the heater block and causing thermal runaway errors.

• Non-Stick Protective Shield: Keeps the heater block clean by repelling stray plastic, protecting delicate internal wiring and ceramic components from filament buildup.

• High-Temperature Resistance: Engineered from premium silicone capable of enduring continuous high-speed printing environments without tearing or degrading.

• Secure Snug Fit: Features precision internal retention ridges that snap tightly over the hotend structures, preventing the sock from sagging or slipping mid-print.

Applications

• Replacing worn, charred, or torn silicone covers on Phaetus Rapido 2, Rapido Plus 2, and Rapido 2F Ultra High Flow hotends.

• Maintaining stable extrusion temperatures on high-speed Voron Trident and custom CoreXY 3D printers running high-flow toolheads.

• Shielding surrounding 3D-printed toolhead components (such as Stealthburner parts) from intense radiant heat during long engineering-grade print cycles.