CUSTOM ITEM: 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. 100/PK.
Additional Info:
The 9502S‑40C‑B screw caps are a custom‑manufactured specialty item developed for laboratories seeking a softer and more economical silicone rubber option compared to standard white silicone formulations.
The orange‑red silicone rubber used in these septa is softer than natural red rubber and more economical than white silicone rubber. This softer composition is beneficial for autosampler operation, helping reduce stress on autosampler needles and injection systems, particularly in methods involving frequent injections or extended sequences.
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 helps prevent septa movement, dislodgement, or plunge during injection, supporting consistent sealing and reliable autosampler performance.
The knurled polypropylene caps provide secure handling and consistent torque application, making these caps compatible with a wide range of autosampler platforms designed for 9‑425 vial configurations.
Important Ordering Information
Made to order custom item
Not returnable
Orders cannot be canceled once placed
CLASS D – Custom order
This product is intended for laboratories with specific material preferences, method requirements, or instrument‑protection priorities that are not addressed by standard off‑the‑shelf caps.