HARIO Syphon Flask TCA-5 glass replacement for vacuum coffee brewer

HARIO Syphon Flask TCA-5 glass replacement for vacuum coffee brewer is a heat-resistant glass flask shaped to fit compatible syphon/vacuum coffee brewers. Intended as a direct replacement for the glass chamber of a syphon brewer, this flask is designed to withstand rapid temperature changes and to work as the upper or lower chamber in immersion and vacuum brewing processes. The transparent glass allows visual control of extraction and helps achieve a clear, full-flavoured cup when used with correct grind and technique.

Advantages

This replacement flask is made from borosilicate heat-resistant glass to tolerate high brewing temperatures and thermal shock. Its shape and dimensions match common syphon systems that accept the TCA-5 form factor, ensuring a stable fit and reliable seal when assembled with compatible gaskets and connectors. The clear glass provides good visibility during brewing, allowing users to monitor bloom, immersion time and vacuum draw without affecting flavour.

Suitable for

• Home syphon/vacuum coffee brewers that accept TCA-5 style glass chambers
• Cafés and specialty coffee shops using syphon brewing for single-cup or small-batch preparation
• Baristas and enthusiasts who require a spare or replacement glass chamber for maintenance or safety

Key specifications

• Material: heat-resistant borosilicate glass
• Function: upper or lower chamber for syphon/vacuum coffee brewing
• Design: transparent, shaped to fit TCA-5 compatible syphon systems
• Thermal properties: resistant to rapid temperature changes typical in vacuum brewing
• Use environment: suitable for home and professional coffee preparation

How to use

Before use, inspect the glass for cracks or chips and ensure all sealing surfaces and gaskets on the syphon unit are clean and intact. Fit the glass flask into the syphon brewer according to the brewer manufacturer's assembly instructions, ensuring a secure connection with the filter, gasket and upper/lower chamber as applicable. Add the correct amount of water and ground coffee, then apply heat according to your syphon brewer's recommended procedure. Monitor the brewing process through the transparent glass and remove heat when the vacuum draw and extraction are complete. Allow the flask to cool before disassembling and cleaning.

Usage recommendations

Handle the glass with care, avoid sudden temperature shocks such as pouring very cold water into a hot flask, and replace any damaged gaskets to maintain a proper seal. Clean the flask with warm water and a non-abrasive cloth; avoid strong impacts and store in a safe place to prevent accidental breakage.