Catalog Number - 95025-04-2S

The 95025-04-2S MICROSOLV Headspace Caps are a made‑to‑order configuration combining ultra‑clean, fully laminated silicone/PTFE septa with a pressure‑relief aluminum cap design, offering excellent chemical inertness, sealing reliability, and built‑in safety for pressurized headspace GC applications.

These caps are fitted in 20 mm aluminum closures with an 8 mm center hole and engineered score lines, allowing consistent autosampler needle access while safely venting excess pressure when required.

✅ Recommended for validated, high‑sensitivity workflows requiring pressure relief and fully laminated PTFE protection

• Headspace Pressure Relief Caps with Silicone/PTFE Septa

Pressure Relief Design – Engineered Safety

• Aluminum caps with score lines designed to vent at ~3.0 ± 0.5 bar

• Helps prevent:

  • Vial rupture

  • Over‑pressurization

• Protects:

  • Laboratory personnel

  • Instruments

✅ Ideal for volatile and pressurized headspace applications

Fully Laminated Silicone/PTFE Septa – Maximum Inertness

• Silicone rubber laminated with PTFE on both sides

• Provides:

  • Superior chemical resistance

  • Minimal sample interaction

  • Reduced extractables

✅ Ideal for sensitive and trace‑level analyses

Soft Septa – Easier Needle Penetration

• Durometer: 45 Shore A

• Septa thickness: 3.0 mm

• Provides:

  • Reduced needle force

  • Smooth penetration

  • Lower needle wear

✅ Improves autosampler performance and reproducibility

8 mm Center Hole – Enhanced Sealing Performance

• Smaller opening provides:

  • Increased septa contact area

  • Improved sealing integrity

• Maintains:

  • Reliable needle access

✅ Ideal for applications requiring both safety and high seal quality

Wide Temperature Range – Headspace Ready

• Operating range:

  • -60°C to 200°C

✅ Suitable for:

• Heated headspace GC

• Volatile and semi‑volatile compounds

• Broad analytical conditions

Crimp Top Design – Secure Seal Integrity

• 20 mm aluminum crimp cap

• Provides:

  • Airtight sealing (until pressure threshold is reached)

  • Reliable containment of volatile samples

✅ Essential for accurate headspace GC analysis

Designed for 20 mm Headspace Vials

• Compatible with:

  • 20 mm crimp‑top headspace vials

✅ Ensures:

• Proper fit

• Consistent analytical results

Performance Positioning – High Purity + Safety Option

• Compared to butyl/PTFE:

  • ✅ Greater chemical inertness

• Compared to partial laminate (Pharma‑Fix™):

  • ✅ Lower extractables

• Compared to standard caps:

  • ✅ Added pressure‑relief safety

✅ Ideal for:

• high‑sensitivity methods

• volatile samples

• safety‑critical workflows

Typical Applications

• Headspace GC analysis

• Pharmaceutical QA/QC and validation

• Environmental VOC testing

• Food and flavor analysis

• Applications with pressure buildup and trace detection

Important Usage Notes

• Requires 20 mm crimping tool for proper sealing

• Pressure‑relief feature:

  • Designed to vent at defined threshold

  • Not intended for pressure retention

• Best suited for:

  • high‑purity, safety‑focused workflows

• 🚨Made‑to‑Order & Pricing Information

  This is a custom, made‑to‑order item.

  • Please contact Customer Service for formal quotation, lead time, and ordering assistance. Classification: