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Z512133

Sigma-Aldrich

Serrated natural rubber septa

red rubber, bottom O.D. 23 mm, fits neck I.D., 20.5 mm, ST/NS: 24/40

Synonym(s):

Natural Rubber Seal

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About This Item

UNSPSC Code:
41121800
eCl@ss:
32119211
NACRES:
NB.35

material

red rubber

usage

ST/NS: 24/40

feature

fits neck I.D. 20.5 mm

packaging

package of 100

bottom O.D.

23 mm

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General description

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.
Note: For extra security when using large bore transfer needles, fasten septum to bottle or flask opening with a wrap-it tie. See ties and accessory tool listings on next page.

Application

Serrated natural rubber septa are suitable for temporary closure for glassware joints, tubes, bottles, nuclear magnetic resonance (NMR) tubes, ampules, and cannulation techniques in air-sensitive chemistry.

Features and Benefits

  • Natural rubber septa are made of low-density /US/ennatural rubber.
  • Used to cover mild organic solvents and aqueous solutions.

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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