This is a custom item.

Plug. PEEK, 1/4-28, ARE-Applied Research brand. Bulk Price.

Additional Info:

49025-01N ARE‑Applied Research PEEK Plug is a high‑precision threaded sealing component designed for HPLC mobile phase delivery caps and solvent bottle systems, ensuring secure closure of unused ports.

Manufactured from high‑performance PEEK (polyether ether ketone), this plug offers excellent chemical resistance and mechanical strength, making it ideal for demanding chromatography and analytical laboratory environments.

The threaded design fits standard 1/4‑28 ports, allowing reliable sealing in caps and fittings used in solvent delivery systems.

View economical 10‑pack options for increased efficiency and cost savings

Sealing Performance – Contamination Prevention

  • Provides secure closure for unused cap ports

  • Helps prevent air and oxygen ingress

  • Minimizes solvent exposure to atmospheric gases

  • Maintains mobile phase integrity

✅ Supports consistent analytical results and solvent stability

PEEK Construction – High Chemical Compatibility

  • Made from PEEK (polyether ether ketone)

  • Resistant to common HPLC solvents

  • Excellent mechanical strength and durability

  • Ideal for repeated use in laboratory conditions

✅ Suitable for high‑performance chromatography applications

1/4‑28 Thread – Standard Compatibility

  • Fits 1/4‑28 threaded ports

  • Compatible with:

    • Mobile phase delivery caps (e.g., 58820-06)

    • Solvent system fittings

    • Laboratory fluid handling assemblies

✅ Ensures secure and reliable system integration

Enhanced Handling Design

  • Knurled surface for easy finger tightening

  • Flat sides allow wrench-assisted quarter tightening

  • Enables secure sealing without over‑tightening

  • Easy removal if seated tightly

✅ Designed for ease of use and consistent sealing performance

System Compatibility & Use

Commonly used with:

  • HPLC / UHPLC mobile phase delivery systems

  • LC‑MS solvent routing setups

  • Multi‑port solvent cap assemblies

  • Degassing and tubing configurations

Typical Applications

  • Sealing unused ports in delivery caps

  • Maintaining inert solvent environments

  • Preventing contamination in mobile phase systems

  • Laboratory fluid handling applications

  • Integrated into original equipment manufacturer (OEM) product designs

Important Usage Notes

  • Designed for 1/4‑28 threaded ports only

  • Use appropriate torque (finger tight + slight wrench assist if needed)

  • Inspect threads and sealing surfaces regularly

  • Ideal for use with solvent delivery cap systems

Made‑to‑Order & Pricing Information

This is a custom, made‑to‑order item.

  • Orders cannot be canceled once placed

  • Custom items are non‑returnable

Custom Order Item. Inquire for more information.

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