Product Description
Pharmaceutical and research vials need stoppers that will not leach additives into sensitive solutions. These gray chlorobutyl stoppers are formulated without plasticizers, MBT, nitrosamine precursors or natural rubber latex, giving a clean seal for aqueous products and stable long-term storage.
This listing is for Kimble catalog number 73811T-21: Gray Chlorobutyl Straight-Sided Stoppers, 20 mm, Case of 100. The stoppers are straight-sided with a durometer of 50 and are suited to aqueous solutions from pH 2 to 10. They fit 13 mm and 20 mm vial finishes. The 73811T series adds an ETFE facing to improve chemical compatibility and reduce surface interactions with the product. Order it from LIGHT LABS and keep your lab stocked with genuine DWK Life Sciences products.
Key Features
- Clean formulation – No plasticizers, MBT, nitrosamine precursors or latex.
- pH 2 to 10 compatibility – Suited to a wide range of aqueous solutions.
- ETFE-faced option – 73811T series minimizes product contact with rubber.
- Durometer 50 – Balanced firmness for sealing and needle penetration.
- Two sizes – 13 mm and 20 mm finishes.
Specifications
| Catalog Number | 73811T-21 |
| Brand | Kimble (DWK Life Sciences) |
| Description | Gray Chlorobutyl Straight-Sided Stoppers, 20 mm |
| Sold As | Case of 100 |
| Material | Gray chlorobutyl rubber |
| Facing | Uncoated or ETFE fluoropolymer (73811T) |
| Durometer | 50 |
| pH range | 2-10 aqueous |
| Fits | 13 mm; 20 mm finish |
| Latex | Not made with natural rubber latex |
Available Options
- 73811-21 – Gray Chlorobutyl Straight-Sided Stoppers, 20 mm, Case of 1,000
- 73811T-13 – Gray Chlorobutyl Straight-Sided Stoppers, 13 mm, Case of 100
Applications
- Pharmaceutical vial packaging
- Research sample storage
- Serum vial closure
- Biologic formulations
