Aluminum Crimp-Top Pressure Release Seals and PTFE/Gray Butyl Rubber Septa, Silver, Preassembled, 20 mm, 100-pk. 
Choose preslit caps (available for some vials) to reduce the risk of needle bending, release vacuum from high-volume injections, and improve injection reproducibility when greater than 20% of vial volume is withdrawn.
Features & Benefits
| Weight | 0.75 lbs |
|---|---|
| Dimensions | 8 × 7.50 × 2 in |
| Material | aluminum |
