4x sealing for ring. Made of - materials, and practical. for Easy to replace: just use your fingers to roll off the rubber for ring that needs to be replaced, then slide the that can be replaced, easy to install and remove; If you need to replace the lid seal, just replace the lid, you can keep your food fresh.
This product would be ideal for applications requiring high-quality heat insulation, such as in electrical or machinery enclosures.
