Pasteur Pharmacy
20mm Snap-On* (S-O) Chlorobutyl Vial Stopper, Gray (Pack of 1,000)
20mm Snap-On* (S-O) Chlorobutyl Vial Stopper, Gray (Pack of 1,000)
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This product is a 20 mm gray chlorobutyl rubber stopper designed for use as a sterile, airtight seal on glass serum vials or bottles with a 20 mm crimp-finish neck. The snap-on (straight-out) design ensures secure closure while facilitating easy vial access during pharmaceutical compounding or laboratory procedures. Manufactured from chlorobutyl rubber, these stoppers offer excellent chemical resistance, durability, and low gas permeability, maintaining vial integrity and product stability. Supplied in a bulk quantity of 1,000 pieces, they are ideal for high-volume clinical, pharmaceutical, or research settings requiring reliable and consistent vial sealing solutions.
Shipping
Shipping
USA DOMESTIC SHIPPING
We offer standard shipping (5–9 business days) on all U.S. orders.
CANADIAN SHIPPING
Orders within Canada typically arrive within 3–7 business days. Please note that depending on the product or supplier, customs or duties may apply.
INTERNATIONAL SHIPPING
We offer standard international shipping (2–6 weeks). Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility and may vary by country.
Hassle-Free Returns
Hassle-Free Returns
We hope you love what you ordered! But if you got the wrong size, color doesn’t suit you, or you just changed your mind, no problem! Contact us for a return or exchange. You may return your item within 30 days of purchase for a full refund.
If you have any concerns or want to discuss an exchange do not hesitate to contact us.
Our goal is Complete Customer Satisfaction.


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OSADIA is a Spanish word that means "audacity." We believe this word reflects the unique journey and stories behind our products, those stories are all about hard work, courage and resilience. In Osadía you will find unique fair trade, handmade & socially responsible products, every product is empowering artisans, small businesses and vulnerable communities around the world.