Air-Sensitive Glassware

Air Sensitive Septa - Sigma-Aldrich Glassware Catalog

Schlenk-Type  •  Storage  •  Septa  •  Inert Gases & Equipment


Septa Accessories



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Natural rubberSerrated rubberSerrated silicone rubber



Natural rubber septa

For use with:
White rubber
Catalog Number
Red rubber
Catalog Number
11.    5mm NMR tubes
12.    7mm o.d. glass tubing
13.    8 or 9mm o.d. glass tubing
14.    9 or 10mm o.d. glass tubing
15.     13mm i.d. tubing
16.    S.T. 10/30 joints and small test tubes
17.    S.T. 14/20 joints*
18.    S.T. 19/22 joints**
19.     S.T. 24/40 joints***
10.    Mixed set, 145 pieces with carryingbox, contains the following: 25 each of 1 to 3 above, 20 each of 4 and 6 above, 10 each of 7 to 9 above

   * Also fits Aldrich 2, 4, and 8oz narrow-mouth bottles.
  ** Also fits Aldrich 10, 32, 40oz, and 1L narrow-mouth bottles, and 125mL and 1L Sure/Seal bottles.
 *** Also fits Aldrich 64, 80oz, and 1gal narrow-mouth bottles.



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Serrated rubber septa

Closure has a turnover flange molded to grip outside of container neck, promoting a double seal in conjunction with annular serrations on a hollow plug. Annular serrations depress themselves against the inside wall of the bottle neck, making each serration a suction sealing point.


Fits container
neck i.d. (mm)
For use with:
White rubber
Catalog Number
Red rubber
Catalog Number
8.0
10/30
12.5
14/20
16.0
Sure/Seal
17.5
19/22
20.5
24/40
25.5
29/42


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Serrated silicone rubber septa

Translucent silicone rubber septa that contains no pigments, waxes, or molding agents.

Fits container
neck i.d. (mm)
For use with:
White rubber
Catalog Number
8.0
10/30
12.5
14/20
16.0
Sure/Seal
17.5
19/22
20.5
24/40
25.5
29/42


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