Caps, Screw Top, with Orange Red Rubber / PTFE Septa, bonded in "knurled", polypropylene, Blue Caps. For use with 9-425mm thread, 12x32mm autosampler vials. MICROSOLV Brand. 1000/CS.
Additional Info:
The 9502S‑40C‑B‑M screw caps are a standard production item engineered with orange‑red silicone rubber septa to provide a softer and more economical alternative to traditional white silicone rubber caps.
The orange‑red silicone formulation is softer than natural red rubber, helping reduce stress on autosampler needles and injection systems during repeated injections. This softer material can improve instrument longevity and reduce mechanical wear, particularly in high‑throughput or long‑sequence autosampler workflows.
The PTFE facing maintains chemical inertness and protects samples from direct silicone contact, while the bonded septa construction securely anchors the septa within the polypropylene cap. This bonded design helps prevent septa movement, dislodgement, or plunge, supporting consistent sealing and reliable injection performance.
The knurled polypropylene caps provide secure handling and consistent torque application across a wide range of autosampler platforms using standard 9‑425 vial configurations.
This 1000‑count case format is ideal for laboratories seeking cost efficiency, softer septa materials, and reliable autosampler protection without requiring custom‑manufactured components.