4x sealing for ring. 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.
The "Sealing Ring BPA Black For Heat Insulation No Smell Silicone" is ideal for use in thermal insulation and sealing projects where a high-quality, BPA-free silicone solution is required.
