Skip to Content
Merck
All Photos(1)

Documents

Z512125

Sigma-Aldrich

Serrated natural rubber septa

white rubber, bottom O.D. 14.5 mm, fits neck I.D., 12.5 mm, ST/NS: 14/20

Synonym(s):

Natural rubber seal, Rubber septa

Sign Into View Organizational & Contract Pricing


About This Item

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

material

white rubber

usage

ST/NS: 14/20

feature

fits neck I.D. 12.5 mm

packaging

package of 100

bottom O.D.

14.5 mm

Looking for similar products? Visit Product Comparison Guide

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 as a 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’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service