8-425mm Black Cap with Red PTFE/White Silicone Pre-Slit Septa, 100-pack

This 8-425 threaded black cap features a high-quality red PTFE/white silicone septum with pre-slit design, engineered for autosampler vials in HPLC, GC, and LC-MS applications. The pre-slit configuration enables smooth needle penetration while maintaining sample integrity, making it ideal for high-throughput analytical laboratories requiring reliable and consistent sealing performance.

• Thread size: 8-425mm standard screw thread for universal autosampler vial compatibility
• Septum material: Red PTFE/White Silicone composite for excellent chemical resistance and resealing properties
• Pre-slit design: Facilitates easy needle insertion and reduces coring during automated sampling
• Cap color: Black polypropylene construction for durability and sample identification
• Quantity: 100 caps per package for laboratory convenience and inventory efficiency
• SKU: C4013-77ANL (Alternate for 08 15 1449)