Product Description
Pairing an unlined aluminum seal with the right septum lets you choose exactly how a vial interacts with its contents and with the needle. These septa give crimp-sealed vials a clean, chemically resistant barrier that holds up to repeated needle access and storage.
This listing is for Wheaton catalog number 224168: Septa, 20 mm, Gray Butyl/PTFE, Case of 100. Options include PTFE-faced silicone, plain red silicone and a molded gray butyl septum with a PTFE inset, whose combined butyl and PTFE sealing surface gives a more positive seal than flat PTFE-faced septa. Sizes fit vials with 13 mm, 20 mm and 30 mm mouth OD, and are placed under an unlined seal before crimping. Add it to your LIGHT LABS order alongside the rest of your glassware and closures.
Key Features
- PTFE facing – Highly chemical-resistant face helps protect sample integrity.
- Butyl and PTFE option – Molded septum with PTFE inset gives a more positive seal.
- Multiple sizes – Fits 13 mm, 20 mm and 30 mm mouth OD vials.
- Pairs with unlined seals – Lets you match septum material to the application.
Specifications
| Catalog Number | 224168 |
| Brand | Wheaton (DWK Life Sciences) |
| Description | Septa, 20 mm, Gray Butyl/PTFE |
| Sold As | Case of 100 |
| Septa material | PTFE-faced silicone; silicone; gray butyl with PTFE inset |
| For mouth OD | 13 mm; 20 mm; 30 mm |
| Use with | Unlined aluminum seals |
Available Options
- 224172 – Septa, 13 mm, White PTFE / White Silicone, Case of 100
- 224174 – Septa, 30 mm, PTFE/Silicone, Case of 100
- W224163 – Septa, 20 mm, Red Silicone, Case of 1,000
- W224173 – Septa, 20 mm, PTFE/Silicone, Case of 100
Applications
- Crimp-sealed sample vials
- Headspace and volatile samples
- Serum bottle closures
- Pharmaceutical sample storage
