WHEATON® Rubber Stopper, Wafer, 20 mm, Gray Chlorobutyl-Isoprene Blend / FEP Faced, 40 Durometer
- Available in a variety of elastomeric materials including bromobutyl, chlorobutyl, natural rubber, and silicone.
- Used with aluminum seals and glass vials.
- Butyl rubber stoppers are often used in vaccines, biologics, and other parenteral drugs.
- Silicone more commonly used in ophthalmic applications.
- Red rubber more commonly used for diagnostic, animal health, or laboratory use.
- Unit of Measure:
- EA
