Product Description
A tight seal between filter holder and flask is essential for strong, steady vacuum. These No. 8 silicone stoppers seat a filtration support base in the neck of a filter flask, preventing air leaks that slow filtration and keeping the assembly upright and stable during use.
This listing is for Wheaton catalog number 419356: No. 8 Silicone Stopper, Case of 6. Each stopper is bored to accept the stem of a filter support base and is made from silicone, which stays flexible and tolerates autoclaving and many cleaning agents. They are packed six per case, making it easy to replace worn stoppers or outfit several flasks for parallel filtration. Add it to your LIGHT LABS order alongside the rest of your glassware and closures.
Key Features
- No. 8 size – Fits filter flasks with No. 8 stopper necks.
- Silicone material – Stays flexible and resists heat and many chemicals.
- Airtight seal – Helps maintain strong vacuum during filtration.
- Six per case – Spares for multiple filtration setups.
Specifications
| Catalog Number | 419356 |
| Brand | Wheaton (DWK Life Sciences) |
| Description | No. 8 Silicone Stopper |
| Sold As | Case of 6 |
| Material | Silicone |
| Size | No. 8 |
Applications
- Sealing filter holders to flasks
- Vacuum filtration setups
- Replacement for worn stoppers
- Membrane filtration stations
