About GMT (Stopper Division)
Geo-Microbial Technologies, Inc. (GMT) has been offering butyl rubber stoppers since the early
1990s.  In the early 1990s GMT was a major supplier of specialty anaerobic media to the
petroleum industry.  Due to limited suppliers of the  "Balch" type stoppers and the fact that the
quality and availability had deteriorated, GMT found it necessary to establish another reliable
source of these "Balch" type stoppers in order to maintain quality control.  As a result, GMT
developed far superior and less expensive stoppers for our own use.

Once we had perfected the formula we decided to pass on our products and savings to others!

In addition to our stoppers, we sell specialty anaerobic media.  If you would be interested in
media, contact us for more information.

For other services offered by GMT, visit
www.gmtgeochem.com.
Privacy Policy
GMT realizes the importance of our customer's privacy.  For this reason we will not
share any information provided by our customers (including identities, payment
information, addresses, etc)  with any other person, group, company, or affiliation.


About Us
About GMT (Stopper Division)
About GMT (Stopper Division)