The red Corning® polybutylene terephthalate (PBT) high temperature caps have 3 holes with 1/8" OD tubing. No need to precut tubing to reach the reservoir bottom, just a quick quarter turn of the lock nut (from outside the reservoir).
Specification
Product Number: 1395-45DC Qty./Pk: 1/ Pk Qty./Cs: 1/Cs Brand: Corning® Cap Style: Screw cap Cap Material: Polybutylene terephthalate Cap Color: Red Color: Red Sterile: No
Features
With GL45 thread. Can be sterilized by dry heat at 180°C. It is lined with polytetrafluoroethylene (PTFE).