Weck Tulip Jars

Yes, the glass jars are both microwave and dishwasher safe. However, you should remove the stainless steel clamps and rubber gaskets before placing the jar in the microwave to avoid damage.

While the glass is durable, you should not freeze the jars with the glass lids and clamps attached, as the expansion of contents can cause breakage. For freezer storage, it is recommended to use Weck's separate 'Keep Fresh' plastic covers instead.

To create a secure seal, place the rubber gasket on the lid, position the lid on the jar, and secure it with the two stainless steel clamps. If you are canning, the vacuum process will pull the lid down to create an airtight seal; for pantry storage, the clamps provide a tight, secure closure.

Yes, both the stainless steel clamps and the rubber gaskets are designed to be reused. We recommend inspecting the rubber gaskets for any signs of wear or cracking before each use to ensure the best possible seal.

The glass jars are dishwasher safe for easy cleaning. The rubber gaskets and stainless steel clamps should be hand-washed with warm, soapy water to maintain their integrity and prevent potential rust or degradation over time.