4000ps 10ml Clear Glass Headspace Vials Aluminum Crimp Caps 20mm Beveled Edge GS

These premium solid silicone vial stoppers are designed to provide superior performance compared to standard butyl rubber stoppers.

• Enhanced Protection: Naturally resistant to humidity, water damage, and contamination.

• Superior Durability: Offers greater chemical, acid, and temperature resistance than traditional butyl stoppers.

• Clean & Professional Look: Transparent, sterile appearance for a neater, more polished presentation.

• Reliable Seal: Compatible with 20mm serum vials and used with 20mm flip-off, flip-top, or standard aluminum seals to ensure an airtight closure.

Ideal for applications requiring a high-quality, durable, and contamination-resistant stopper.

20mm Flip Top Seals (also called Flip-Off or Flip-Cap Seals) are an essential component of serum vial packaging, designed to maintain closure integrity and product safety.

These seals are compatible with all 20mm tubular or molded serum vials.They are typically used in combination with:

• Standard grey or red butyl rubber stoppers

• 2- or 3-pronged lyophilization stoppers (for complete sealing and freeze-dry pharmaceutical applications)

• Clear gel silica stoppers (providing superior resistance to humidity, temperature changes, and chemical exposure)

Flip Top Seals ensure secure closure while allowing easy access when needed, making them a trusted choice in laboratory, clinical, and pharmaceutical settings.