Silicone rubber tube - will withstand repeated use and for visual inspection of fluids.
Maximum Temperature: 200C(392F); Minimum Temperature: -60C(-76F); Internal Diameter: 2mm(0.08")
External Diameter: 4mm(0.16"); Wall Thickness: 1mm(0.04")
Good electrical and weather ability properties - resists u.V., ozone, gases, and moisture.
Silicone tubing - great for fluid handling, peristaltic pumps, siphoning, draining, aquaponics and water/oil change, etc.