Classic Port Caps

Port caps are for designed for safe solvent delivery or for the collection of solvent waste from HPLC machines. We carry port caps for GL45 and GL38 glass bottles, Nalgene 38-430 plastic bottles and various carboys. Most caps have 1/4-28 UNF threaded "Type A" ports machined in a solid PTFE or polypropylene insert that spins freely before the cap is not tightened. Each 1/4-28 port has a through-hole to push 1/8" OD tubing all the way in to supply your system. Carboy and manifold port caps also have larger 1/4" and 1/2" holes.

These caps are the safety solution for scientists, chemical hygienists, and researchers worldwide, designed to ensure proper delivery and waste containment of industrial chemicals and solvents. Our closed system capabilities reduce harmful emissions which are potentially hazardous to employees and our environment.