Catalog Number - 9502S-40C-B

These 9-425 Screw Caps are designed for use with standard 12 x 32 mm autosampler vials and feature bonded Orange-Red Silicone Rubber / PTFE septa installed in blue knurled polypropylene caps. This custom-manufactured specialty item provides a softer and more economical alternative to traditional white silicone septa.

9502S-40C-B, Orange-Red Silicone Rubber formulation is softer than natural red rubber, helping reduce stress on autosampler needles and injection systems during repeated injections. This can help minimize component wear in high-throughput analytical workflows and extended autosampler sequences.

A PTFE-facing layer provides chemical inertness and protects samples from direct contact with the silicone material, while the bonded septa construction helps prevent septa movement, dislodgement, or plunge during injection. The knurled cap design supports secure handling and consistent sealing performance.

Key Benefits

• Softer Orange-Red Silicone Rubber helps reduce autosampler needle stress

• PTFE-facing layer provides excellent chemical inertness

• Bonded septa design helps prevent septa movement and dislodgement

• Knurled polypropylene caps provide secure grip and handling

• Compatible with standard 9-425 threaded autosampler vials

• Economical alternative to white silicone septa

• Supports consistent sealing and reliable injection performance

Typical Applications

• HPLC analysis

• UHPLC analysis

• LC-MS sample preparation

• Pharmaceutical testing

• Environmental analysis

• Food and beverage testing

• Quality control laboratories

Specifications

• Product Type: Screw Cap with Bonded Septa

• Closure Style: Screw Top

• Thread Size: 9-425

• Cap Material: Polypropylene

• Cap Color: Blue

• Cap Style: Knurled

• Septa Material: Orange-Red Silicone Rubber / PTFE

• Septa Type: Bonded

• Vial Compatibility: 12 x 32 mm Autosampler Vials

• Quantity: 100 Caps per Pack

• Brand: MICROSOLV

• Item Status: Custom-Manufactured Specialty Item

Compatibility

• Fits standard 9-425 threaded autosampler vials

• Designed for 12 x 32 mm vial configurations

• Compatible with most autosampler platforms

• Suitable for HPLC, UHPLC, and LC-MS workflows

Performance and Design Notes

• Softer silicone composition may help reduce wear on autosampler needles

• PTFE barrier helps protect sample integrity

• Bonded septa construction supports consistent autosampler performance

• Knurled caps allow reliable torque application during vial preparation

• Designed for laboratories with specific material and method requirements

Related Products

For larger packaging quantities:

• 9502S-40C-B-M – Case Quantity Screw Caps with Orange-Red Silicone Rubber / PTFE Bonded Septa

Important Notes

• Custom-manufactured specialty item

• Designed for use with 9-425 threaded autosampler vials

• Septa are permanently bonded into the cap

• Suitable for routine and high-throughput laboratory applications

• Packaged 100 caps per pack

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