Catalog Number - 95020-55S-W

The 95020-55S-W MICROSOLV Headspace Caps are a made‑to‑order configuration designed for temperature‑resistant headspace GC applications, combining white silicone rubber / blue PTFE septa with magnetic steel screw caps for secure sealing and autosampler compatibility.

These caps feature ND18 (18 mm precision threads) and an 8 mm center hole, providing tool‑free sealing, consistent needle access, and reliable performance under elevated temperature conditions.

✅ Recommended for validated methods requiring higher hardness and temperature resistance

Screw Top Design – ND18 Precision Thread

• ND18 (18 mm precision thread)

• Provides:

  • Tool‑free sealing

  • Fast sample preparation

  • Consistent closure torque

✅ Ideal for manual and automated workflows without crimp tools

Magnetic Steel Caps – Automation Compatible

• Steel caps with magnetic properties

• Enables:

  • Robotic handling

  • Autosampler integration

• Silver finish:

  • Clean appearance

  • Corrosion resistance

✅ Compatible with:

• CTC® autosamplers

• Agilent® systems

• PerkinElmer TurboMatrix® 16, 40, and 110

Temperature‑Resistant Silicone/PTFE Septa – Durable & Clean

• White silicone rubber / blue PTFE

• Designed for:

  • Elevated temperature stability

  • Low extractables

  • Reliable chemical inertness

✅ Ideal for routine to moderately demanding headspace GC analyses

Higher Hardness Septa – Enhanced Durability

• Durometer: 55 Shore A

• Septa thickness: 1.5 mm

• Provides:

  • Increased mechanical strength

  • Improved resistance to deformation

  • Longer life in repeated injections

✅ Suitable for robust, repetitive workflows

Wide Temperature Range – Headspace Ready

• Operating range:

  • -60°C to 200°C

✅ Suitable for:

• Heated headspace GC

• VOC and semi‑volatile analysis

• Elevated temperature methods

8 mm Center Hole – Balanced Access & Seal

• Provides:

  • Reliable autosampler access

  • Adequate sealing surface area

✅ Ensures consistent injection performance and sealing integrity

Designed for ND18 Headspace Vials

• Compatible with:

  • 18 mm precision thread (ND18) headspace vials

✅ Ensures:

• Proper fit

• Reproducible analytical results

Availability

✅ Also available in larger quantities:

• Case Quantity Options for 95020-55S-W Headspace Screw Caps with Silicone/PTFE Septa (1000/Case and other bulk configurations available)

Performance Positioning – Durable + Temperature‑Resistant Option

• Compared to softer 45 Shore A septa:

  • ✅ Greater durability

  • ✅ Longer life

• Compared to butyl/PTFE:

  • ✅ Higher temperature range

• Compared to crimp caps:

  • ✅ Tool‑free sealing

• Compared to non‑magnetic caps:

  • ✅ Autosampler compatibility

✅ Ideal for:

• automated GC headspace systems

• higher temperature workflows

• labs requiring longer septa life

Typical Applications

• Headspace GC analysis

• Pharmaceutical QA/QC

• Environmental VOC testing

• Food and flavor analysis

• Routine to moderately demanding workflows

Important Usage Notes

• Designed for ND18 screw‑top vials (not crimp top)

• Magnetic caps:

  • Require compatible autosampler systems

✅ Best suited for:

• durable, temperature‑resistant headspace GC 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: