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Suba-Seal® silicone rubber septa

fits neck I.D., 8 mm, Joint: ST/NS 10/30



rubber septa (silicone)
translucent septa


Joint: ST/NS10/30


fits neck I.D. 8 mm

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General description

  • Translucent silicone rubber septa
  • Contains no pigments, waxes, or molding agents
  • Good for high heat applications (200°C continuous or 400°C intermittent)
  • Autoclavable for sterile uses
  • Excellent resistance to deterioration due to sunlight and ozone

Turnover flange grips outside of container neck, promoting a double seal in conjunction with annular serrations on hollow plug.

Annular serrations depress themselves against the inside wall of the bottle neck, making each serration a suction sealing point.

Legal Information

Suba-Seal is a registered trademark of Sigma-Aldrich Co. LLC

Certificate of Analysis

Certificate of Origin

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. Can the Suba-Seal silicone rubber septa be sterilized with gamma irradiation?

    Our silicone suba seals are generally steam sterilized. Testing has not been done here at Sigma-Aldrich using gamma irradiation. Gamma rays are known to change some physical properties of silicone rubber. Refer to the attached white paper from a leading manufacturer of silicone rubber products. Based on this, it seems gamma irradiation is detrimental to silicone rubber.

  6. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

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