Grey Butyl Vial Stopper
The grey butyl rubber is made of high quality material, durable, washable and reusable. Resistant to high temperature, creating a great seal that extends the life of the material in the vial.
- American made 20 MM grey butyl stopper, for use with all 20 MM seals.
- Provides an airtight seal for all 20 MM GPZ vials.
- Will fit all 20 MM GPZ clear and amber vials sold.