Catalog Number - 95025-02-2S

The 95025-02-2S MICROSOLV Headspace Caps combine safety‑engineered pressure‑relief aluminum caps with grey butyl rubber septa laminated with PTFE on both sides, providing a balanced solution of chemical resistance, sealing integrity, and controlled venting.

These caps feature a smaller 8 mm center hole, offering more septa coverage and improved sealing reliability, while maintaining consistent autosampler needle access. Designed for 20 mm crimp‑top headspace vials, they are ideal for GC workflows involving volatile or pressurized samples.

Pressure Relief Design – Enhanced Safety

• Scored aluminum caps engineered to vent at ~3.0 ± 0.5 bar

• Helps prevent:

  • Vial rupture

  • Excess pressure buildup

• Maintains:

  • Operator safety

  • Instrument protection

✅ Ideal for pressurized or volatile headspace applications

Laminated Butyl/PTFE Septa – Balanced Performance

• Butyl rubber core laminated with PTFE on both sides

• Combines:

  • Butyl elasticity (excellent sealing)

  • PTFE inertness (chemical resistance)

• Reduces:

  • Sample interaction

  • Extractables

✅ Suitable for routine to moderately sensitive GC headspace analysis

Improved Seal with 8 mm Center Hole

• Smaller opening provides:

  • Increased septa surface area

  • Enhanced sealing performance

• Maintains:

  • Reliable autosampler access

✅ Ideal when maximum sealing with pressure relief is needed

Septa Performance Characteristics

• Thickness: 3.0 mm

• Durometer: 55 Shore A

• Provides:

  • Good resealing after penetration

  • Durable multi‑injection performance

✅ Supports consistent analytical results

Temperature Range – Headspace Compatible

• Operating range:

  • -40°C to 120°C

✅ Suitable for:

• Standard headspace GC methods

• Moderate temperature applications

Crimp Top Design – Secure Containment

• 20 mm aluminum crimp cap

• Provides:

  • Airtight seal (until pressure vent threshold)

  • Reliable volatile sample containment

✅ Ensures accurate and reproducible headspace results

Designed for 20 mm Headspace Vials

• Compatible with:

  • 20 mm crimp‑top headspace vials

✅ Ensures:

• Proper fit

• Consistent sealing and performance

Cost‑Effective Safety + Performance Solution

• Combines:

  • Pressure relief safety

  • Chemical resistance from PTFE

  • Economical pricing

✅ Ideal for routine labs needing both safety and compatibility

Typical Applications

• Headspace GC analysis

• Volatile organic compound (VOC) testing

• Environmental and industrial labs

• QA/QC testing

• Applications with potential pressure buildup

Important Usage Notes

• Requires 20 mm crimping tool for proper sealing

• Pressure‑relief feature:

  • Will vent at defined pressure threshold

  • Not intended for retaining pressure above limit

• Best suited for:

  • routine to moderately sensitive analyses with safety considerations