Catalog Number - 95025-03-2S

The 95025-03-2S MICROSOLV Headspace Caps are a made‑to‑order configuration combining Pharma‑Fix™ septa technology with a pressure‑relief aluminum cap design, offering optimal sealing performance, chemical inertness, and safety under pressurized conditions.

These caps use grey butyl rubber septa partially laminated with PTFE on the sample‑facing side, installed into 20 mm aluminum caps with an 8 mm center hole and engineered pressure‑relief scoring, making them ideal for volatile, reactive, or pressurized headspace GC applications.

✅ Recommended for validated workflows requiring Pharma‑Fix™ + pressure‑relief configuration

• Pressure Relief Caps with Pharma‑Fix™ Septa

Pressure Relief Design – Engineered Safety

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

• Helps prevent:

  • Vial rupture

  • Over‑pressurization

• Protects:

  • Laboratory personnel

  • Instruments

✅ Ideal for pressurized or volatile headspace analyses

Pharma‑Fix™ Septa – Dual‑Material Optimization

• Butyl rubber with PTFE laminate on sample side only

• Combines:

  • PTFE inertness (sample protection)

  • Butyl elasticity (superior sealing)

• Reduces:

  • Extractables

  • Sample interaction

✅ Ideal for sensitive GC headspace workflows requiring both purity and seal integrity

Partial Lamination – Superior Seal Design

• PTFE layer on light grey (sample‑facing) side only

• Butyl contacts vial rim for:

  • Enhanced elasticity

  • Stronger seal

✅ Provides better sealing vs. fully laminated PTFE septa

8 mm Center Hole – Increased Sealing Area

• Smaller opening compared to 10 mm designs

• Provides:

  • Greater septa surface contact

  • Improved sealing performance

✅ Ideal when maximum seal reliability is needed with pressure relief

Septa Performance Characteristics

• Thickness: 3.0 mm

• Durometer: 50 Shore A

• Provides:

  • Strong resealing after puncture

  • Durable multi‑injection capability

✅ Suitable for extended autosampler sequences

Temperature Compatibility – Headspace Ready

• Operating range:

  • -40°C to 120°C

✅ Designed for:

• Standard headspace GC applications

• Routine volatile compound testing

Crimp Top Design – Secure Containment

• 20 mm aluminum crimp cap

• Provides:

  • Airtight sealing (until pressure threshold is reached)

  • Reliable volatile sample containment

✅ Ensures accurate and reproducible results

Designed for 20 mm Headspace Vials

• Compatible with:

  • 20 mm crimp‑top headspace vials

✅ Ensures:

• Proper fit

• Consistent analytical performance

Performance Positioning – Premium Safety + Seal Solution

• Compared to butyl-only:

  • ✅ Improved chemical resistance

• Compared to fully laminated PTFE:

  • ✅ Better sealing performance

• Compared to non‑relief caps:

  • ✅ Built‑in safety venting

✅ Ideal for:

• regulated labs

• volatile/pressurized samples

• safety‑critical workflows

Typical Applications

• Headspace GC analysis

• Pharmaceutical QA/QC

• Environmental VOC testing

• Food and flavor analysis

• Applications with pressure buildup risk

Important Usage Notes

• Requires 20 mm crimping tool for proper sealing

• Will vent at defined threshold

  • Not suitable for pressure retention above limit

• Septa orientation:

  • PTFE side must face sample

🚨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: