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The silicone valve inside the lid plays a preventive role in case of any backflow during vacuum and disruption of the vertical position of the jar.
Reusable vacuum jars are made from durable polycarbonate material. The flexible cover frame allows for easy assembly and disassembly. Thanks to the durable materials used, all parts can be sterilized at 121°C in an autoclave after use. The silicone valve inside the lid plays a preventive role in case of any backflow during vacuum and disruption of the vertical position of the jar.
