This items is made to order and is not returnable and order cannot be canceled.

CUSTOM ITEM: Caps, Crimp Top, with White Silicone Rubber / Red PTFE Pre-Slit Septa, Silver Caps, with a 4mm center hole. For use with 8mm Vials. MICROSOLV Brand. 100/PK. BULK PRICING.

Additional Info:

The 9508C-30T-S MICROSOLV Crimp Caps are designed for 8 mm serum finish autosampler vials, featuring a 4 mm center hole combined with a pre‑slit silicone rubber/PTFE septum for easy autosampler needle access and reduced penetration resistance.

Each cap is fitted with an ultra‑clean, pre‑slit silicone/PTFE septum (1.3 mm thick), delivering excellent chemical resistance and consistent injection performance for HPLC, GC, and LC‑MS workflows.

4 mm Center Hole – Optimized Needle Access

  • Open center design allows:

    • Smooth needle entry

    • Reduced septa stress

  • Enhances:

    • Injection consistency

    • Autosampler performance

✅ Ideal for automated chromatography systems

Pre‑Slit Silicone/PTFE Septa – Reduced Penetration Force

  • White silicone / red PTFE composition

  • Pre‑slit for easier needle penetration

  • Reduces:

    • Needle resistance

    • Septa coring

    • Particle generation

✅ Ensures smooth, repeatable injections

Tradeoff – Resealing vs. Ease of Use

  • Pre‑slit septa:

    • Improve penetration ease

    • Reduce needle wear

  • May:

    • Provide slightly less resealing than non‑pre‑slit designs

✅ Best for high‑throughput or sensitive autosampler systems

Ultra‑Clean Construction – Low Background Interference

  • Silicone/PTFE septa designed to minimize:

    • Extractables

    • Leachables

  • Thickness: 1.3 mm

✅ Supports clean baselines and accurate results

Crimp Top Design – Secure Seal Integrity

  • 8 mm aluminum crimp cap

  • Provides:

    • Airtight sealing

    • Reduced evaporation

    • Reliable sample containment

✅ Suitable for volatile and non‑volatile samples

Designed for 8 mm Serum Finish Vials

  • Compatible with:

    • 8 mm crimp‑top autosampler vials

  • Ensures:

    • Proper fit

    • Consistent sealing

✅ Enables reliable chromatography performance

Durable Aluminum Construction

  • Silver aluminum caps

  • Ensures:

    • Uniform crimping

    • Strong mechanical seal

    • Consistent results

✅ Suitable for routine and high‑volume workflows

Typical Applications

  • HPLC autosampler workflows

  • GC analysis

  • LC‑MS sample preparation

  • High‑throughput analytical labs

  • Pharmaceutical and environmental testing

Important Usage Notes

  • Requires 8 mm crimping tool for proper installation

  • Pre‑slit septa:

    • Improve injection ease

    • May slightly reduce resealing performance

  • Designed for 8 mm serum finish vials only

Made‑to‑Order & Pricing Information

This is a custom, made‑to‑order item.

Custom Order Item. Inquire for more information.

© Copyright 2026. MICROSOLV. All Rights Reserved. Website & Hosting by BlueTone Media