I get < 20 microns vacuum during a run using natural rubber and gl14 connections with an Alcatel 2021i pump.
Got it here: Ideal Vacuum | Pure Gum Rubber Vacuum HoseTubing 5/16 Inch ID
I get < 20 microns vacuum during a run using natural rubber and gl14 connections with an Alcatel 2021i pump.
Got it here: Ideal Vacuum | Pure Gum Rubber Vacuum HoseTubing 5/16 Inch ID