Product Description
VialMAX™ 15-425 Screw Cap for 4mL and 8mL vials with Pre-assembled Red PTFE/White Silicone Septa, Closed Top, case of 1,000
VialMAX™ 15-425 Screw Caps with Pre-Assembled Red PTFE Septa
Assembling caps and septa by hand slows down sample prep and invites contamination if a septum gets handled too much. This cap comes with a red PTFE septum pre-installed, sized to fit both 4mL and 8mL vials on the 15-425 thread, so you open the box and start capping.
No hidden fees, ever. What you see on the product page is what you pay, plus always-free ground shipping.
| Spec | Value |
|---|---|
| Thread / neck finish | 15-425 |
| Fits vial volumes | 4mL and 8mL |
| Cap material | Black polypropylene |
| Cap style | Closed top |
| Septum material | Red PTFE / white silicone |
| Assembly | Pre-assembled onto cap |
| Pack size | Case of 1,000 (100 per bag) |
Key Features
- Septum pre-installed at the factory, no manual assembly step
- Red PTFE facing resists most common solvents used in extraction and storage
- One cap size fits both 4mL and 8mL 15-425 vials, so you stock fewer SKUs
Recommended Applications
- Sealing sample storage and extraction vials
- General lab use where a chemically resistant septum matters
- Cannabis and food/beverage sample storage workflows
Compatible With / Replaces
No verified competitor cross-reference identified for this SKU. Since this is a standard 15-425 thread cap, it's designed to fit any vial using that neck finish, but we're not listing a specific branded "replaces" claim without a confirmed spec match.
FAQ
What septum material is on this cap?
Red PTFE facing with a white silicone backing, pre-assembled onto the cap for resealable, repeated-injection performance.
Does this cap fit both the 4mL and 8mL vials?
Yes, the 15-425 thread is shared by both vial sizes.
Is the septum autoclavable?
SPEC NEEDED, we recommend checking with our team before autoclaving.
Can I buy the vials separately?
Yes, see our VialMAX™ 8mL clear glass vial, 15-425 screw top (case of 1,000).
What's the pack size?
Case of 1,000 (100 per bag).
