Wheaton* Red Rubber Snap-On Stoppers

Snap-on stoppers provide maximum sealing for vials with a blow-back glass finish. Manufactured from the highest quality raw materials to yield exceptional dimensional stability. Made from autoclavable natural red rubber.
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For Mouth I.D. x O.D (mm): 7 x 13

For Mouth I.D. x O.D (mm): 13 x 20