Wheaton 13mm seal, center tear-out aluminum, ptfe/rubber. Aluminum seal features a center tear out disc to expose the septa when ready for use. Size: 13mm. Septa liner: ptfe/red rubber color: natural ideal closure for chromatography vials and other instrumentation applications. Open-top seal provides for filling or retrieving contents with a syringe. Manufacturer: wheaton science manufacturer part no: 224222-01. Warning: this product can expose you to chemicals including tetrafluoroethylene, which are known to the state of california to cause cancer. Prop 65 warning
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