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The red Corning polybutylene terephthalate (PBT) high temperature caps have 3 holes with 1/4 in.-28 threads at the top for use with 1/8 in. O.D. tubing. No need to precut tubing to reach the reservoir bottom, just a quick quarter turn of the lock nut (from outside the reservoir) allows positioning of PTFE tubing at any depth. These delivery caps have a GL45 thread, can be dry heat sterilized at up to 180°C and have a Polytetrafluorethylene (PTFE) liner for efficient sealing.†U.S. and Canada Sales Only
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