Rubber Flip-Top Stopper, Threaded Design, 10 Pack Glass Tube Adapters Material: made of durable borosilicate

Material: made of durable borosilicate glass

this adapter minimizes spillage and ensures precise liquid transfer during chemical experiments

delivering excellent thermal insulation and superior sealing performance

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Rubber Flip-Top Stopper, Threaded Design, 10 Pack Glass Tube Adapters Material: made of durable borosilicateAbout this item Threaded Taper: tapered design with threaded flanged collar ensures a secure seal on a wide range of laboratory glassware Multiple Sizes: available in four sizes to fit standard taper joint glassware: 14# for 14 20 joints, 19# for 19 22 joints, 24# for 24 29 & 24 40 joints, and 29# for 29 42 joints; each comes in a 10 pack to meet routine laboratory needs Rubber Flexibility: constructed from durable rubber material offering excellent