Why This Silicone Septa Works Well
The white PTFE layer offers excellent solvent resistance, while the red silicone layer ensures tight resealability after multiple injections. The pre-slit design lowers needle stress, protects autosampler needles, and delivers clean, reliable injections across repetitive use. It is suitable for high-throughput GC workflows, LC autosamplers, and general sample preparation.
What This Pre-Assembled PTFE/Silicone Septa Is
The Pre-Assembled PTFE/Silicone Septa from intellistone is a ready-to-use cap liner combining a white PTFE facing with a red silicone backing. Designed for GC and HPLC sample vials, this pre-slit septa ensures smooth needle penetration, reduced coring, and strong chemical compatibility for organic and aqueous solvents.
As a laboratory consumables manufacturer and supplier, Intellistone provides stable quality, consistent thickness, and OEM-ready packaging for regulated labs and global distributors.
Key Features of the Pre-Assembled Silicone Septa
Ensures smooth needle penetration and reduces coring.
Maintains sealing integrity after repeated injections.
Protects needles and supports consistent GC/HPLC injection cycles.
Suitable for sensitive analytical workflows.
Uniform 11 × 1 mm specs for consistent vial sealing.
Fits standard 11 mm crimp or screw caps.
Where This Silicone Septa Fits
- GC autosampler injection workflows
- HPLC sample vial sealing
- High-throughput QC laboratories
- Light-to-medium viscosity solvent injections
- Needle-protection scenarios requiring low coring
- Labs needing reliable resealability after repeat injection cycles
OEM & Custom Options for Silicone Septa
Intellistone supports:
- Custom thickness, slit type, and material combinations
- Private-label caps + septa assemblies
- Bulk packaging for distributors
- Cleanroom-ready options
More About Silicone Pre-Slit Septa
- Technical Specs
| Parameter | Specification |
| Product name | Pre-Assembled PTFE/Silicone Septa (Pre-Slit) |
| Material | White PTFE + Red Silicone |
| Size | 11 × 1 mm |
| Design | Pre-slit center |
| Chemical resistance | Excellent for organic & aqueous solvents |
| Packaging | 100 pcs / pack |
| Application | GC & HPLC vials, autosampler injections |
