![PYREX ground-glass stopper Joint: ST/NS 14/20, Combination reagent bottle/ground joint, hollow glass stoppers PYREX ground-glass stopper Joint: ST/NS 14/20, Combination reagent bottle/ground joint, hollow glass stoppers](https://www.sigmaaldrich.com/deepweb/content/dam/sigma-aldrich/product6/189/cls7570n_sm.tif/_jcr_content/renditions/cls7570n_sm-medium.jpg)
PYREX ground-glass stopper Joint: ST/NS 14/20, Combination reagent bottle/ground joint, hollow glass stoppers
![PYREX ground-glass stopper Joint: ST/NS 14/20, Combination reagent bottle/ground joint, hollow glass stoppers PYREX ground-glass stopper Joint: ST/NS 14/20, Combination reagent bottle/ground joint, hollow glass stoppers](https://www.sigmaaldrich.com/deepweb/content/dam/sigma-aldrich/product2/178/cls7570n10-w.jpg/_jcr_content/renditions/cls7570n10-w-medium.jpg)
PYREX ground-glass stopper Joint: ST/NS 14/20, Combination reagent bottle/ground joint, hollow glass stoppers
![24/29,solid Glass Stopper, Ground Joint ,chemistry Borosilicate Glass3.3 Plug - Laboratory Bottle - AliExpress 24/29,solid Glass Stopper, Ground Joint ,chemistry Borosilicate Glass3.3 Plug - Laboratory Bottle - AliExpress](https://ae01.alicdn.com/kf/HTB1Rab3LFXXXXcKXFXXq6xXFXXXh/24-29-Solid-Glass-Stopper-Ground-Joint-Chemistry-Borosilicate-Glass3-3-plug.jpg)
24/29,solid Glass Stopper, Ground Joint ,chemistry Borosilicate Glass3.3 Plug - Laboratory Bottle - AliExpress
![StonyLab Glass Hex Head Hollow Glass Stopper, Hexagonal Head Glass Hollow Stopper for 14/20 Outer Joint Glass with Closed Bottom (14/20 Joint, 1 Pack): Amazon.com: Industrial & Scientific StonyLab Glass Hex Head Hollow Glass Stopper, Hexagonal Head Glass Hollow Stopper for 14/20 Outer Joint Glass with Closed Bottom (14/20 Joint, 1 Pack): Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/51vbcg8K4TL.jpg)