Cap, Mobile Phase Delivery System, GL45 Threads, Blue, PE, for HPLC Reservoir Bottles. A PTFE Insert with 3 Holes, PEEK Plug and O-ring is included 1 EA.

This cap is made of Polyethylene and has GL45 threads making it a good choice for Mobile Phase Reservoir Bottles when the bottle is empty to prevent dust and dirt from entering it or when storing mobile over night or for an extended period of time..