100Pcs Rubber Stoppers Self Sealing Injection Ports For 13Mm Glass Bottles

Specification Material: Butyl Rubber Color: Grey Outer Diameter: 12.5mm /0.49"(appr.) Inner Diameter: 7.2mm /0.28"(appr.)

Features 1: Provide bottle a tight seal with this snap-on stopper 2: Material of durable butyl rubber, good heat stability. 3: Rubber Bottle Stoppers Self Healing Injection Ports. 4: Designed for a 13mm or 1/2 inch diameter hole opening. 5: Widely used for liquid culture, BRF Jars, Supplemented substrate jars, Grain Masters.

Package included 100 X Injection Ports

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