Mason Jar Rubber Gasket Lid Seal
A ring-shaped vulcanized rubber gasket that fits under metal lids for mason jars, creating a vacuum seal for food preservation. Classified as a seal/closure under HTS 4016.99.1500. Distinct from Chapter 73 metal closures by rubber's sealing function.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sold assembled with metal screw-band lid
Complete metal container closures take metal heading precedence.
If reinforced with nylon cord insert
Textile-reinforced rubber gaskets have specific heading.
If made from silicone rubber marketed as plastic
Silicone often classified under plastics Chapter 39 despite rubber properties.
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Import Tips & Compliance
• Document as separate rubber gaskets, not metal lid assemblies, to maintain Chapter 40 status
• Food-grade certification (FDA 21 CFR 177.2600) required for compliance
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