End Caps/Outlet Caps

End caps snap securely over the Optimum cartridge flange to prevent leaks and fluid contamination when dispensing fluids. A center push button presses the end cap against the cartridge wall to form a positive, airtight seal.

Self-venting outlet caps feature a large ribbed gripping area that simplifies manual installation, along with precision molded threads and a tapered seat that provide a snug, leakproof seal. A recessed hex molded into the outlet cap exterior simplifies installation with automated equipment.

Follow these guidelines for safe operation.

Related Products


Nordson EFD’s high-quality Optimum® cartridges are compatible with most retainers on the market today.


Nordson EFD Optimum® cartridge pistons are precision molded to deliver consistent results in fluid packaging and dispensing processes.

Retainer Systems

Nordson EFD Optimum® clear cartridge retainers make it easy to visually monitor fluid levels.