Here we have a brand new, never used, zip lock bag of 100 pieces of 20mm Straight Plug (snap on) Rubber Pharmaceutical Stoppers, Light Gray in color.   These are West Brand (Daikyo) S10-F451 stoppers with D777-1 Formula and RB2-40 coating.    Quality manufactured in Japan for pharmaceutical companies..

NovaPure Components:  Consistent, reliable, high-quality components that are developed under Quality by Design principles to mitigate risk and meet patient needs.

Flurotec Barrier Film:  Your premier choice to protect drugs from contamination by reducing interaction between stopper and drug.

Westar processed stoppers are delivered ready-to-sterilize or ready-to-use – shortening preparation time, avoiding costly investments in washing and sterilization capacity on site and boosting efficiency.


20mm vial stoppers are for serum vials with a 13mm hole opening and 20mm outside rim-to-rim outer diameter.

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We will ship Free via US Mail.