PP Open-Top Caps with Polyimide/White Silicone Septa, 18-400 and 22-400

PP open-top screw caps with 2 mm polyimide/white silicone septa. Choose black 18-400 caps or white 22-400 caps. White 22-400 caps are available in standard and pre-slit configurations. Supplied in packs of 100.

Closure design and use

Open-top options provide access to the sealing component through the cap opening. Where a septum is included, its material layers, thickness and any slit option are specified for the selected configuration. Match the complete assembly to the vial and sampling method.

Technical specifications

Choosing the correct closure

Match the full thread designation or crimp/snap size to the container. Check the sealing material and thickness against the sample and sampling method. For ranges with more than one cap or septum construction, the configuration table shows the actual combinations available; details from different variants should not be combined.

What is supplied?

Supplied quantity: 100pcs/pk. Order the required configuration using the product options above.

Availability and lead time

If this product is not currently in stock, it can still be ordered on backorder. The estimated lead time for backordered items is 10–14 working days.