Agilent Scrw Cap,PTFE/silicone pre-slit bond 500 5040-4649

This is a 12 mm blue screw cap with a bonded, pre-slit PTFE/silicone bi-layer septum supplied in 500/pk. It is described by the manufacturer as suited for a broad range of applications and specifically noted as one of the main choices for HPLC applications where the sample is less volatile or where snap or crimp style vials are not appropriate. The caps are compatible with wide-opening 2 mL glass and polypropylene vials, 2 mL micro vials, and 2 mL High Recovery vials.

Key Features:

• Cap size: 12 mm
• Cap material: Polypropylene
• Septa: Bonded, pre-slit PTFE/silicone bi-layer
• Pack quantity: 500 per pack
• Thread size: 9-425

Advantages:

• Bonded caps offer a better seal than press-fit caps due to the electrostatic bonding procedure used to adhere the cap to the septum (explicit manufacturer statement).
• Pre-slit PTFE/silicone bi-layer septum is suitable for HPLC and other GC/LC techniques where septa integrity and chemical resistance are required (stated uses: GC, LC).
• Compatibility with all wide-opening 2 mL glass and polypropylene vials, 2 mL micro vials, and 2 mL High Recovery vials provides versatile use across common 2 mL vial types (manufacturer-specified compatibility).