Butyl Rubber Stoppers create a gas-tight seal for improved stability.Designed for aluminum seal finish vials Two-leg style reduces possibility of legs sticking together Gray high grade butyl rubber, lyophilization style
Plug diameter 7 mm i.d., 13 mm o.d. Of gray butyl rubber, slotted with flanged top; partial insertion leaves bottle contents vented for freeze drying; insertion to flange seals bottle Readily punctured with syringe needle For use with Thomas series 8269A
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Stopper, Grey Butyl Rubber, 20mm ASF. For use with Headspace Vials.