for 20mm antibiotics vial
butyl rubber
neck dia.: 13.0+-0.1/13.2+-0.1 mm
colour: grey
OEM available

(1)With ISO9001 Certificate
(2)nature/isporene  rubber stopper for infusion bag/lyophilization/serum vial stopper/injection vial
(3)size:we could produce as  you need

Nominal Dimension: 12,13,15, 16, 17

With High purity,

Low puncture outfit retentivity,

Excellent puncture outfit retentivity,

Non-transpire of puncture and good self-sealing quality.