3mm Clear Vinyl Tube

3mm clear vinyl tube (part CVT03) is the finest bore we stock, used where a line has to be small and flexible rather than strong: instrument and gauge lines, dosing and metering, aquarium and laboratory work, and small drain lines on equipment. The tube is unreinforced virgin PVC with a light blue tint, so the line stays soft, bends easily and lets you see exactly what is moving through it.

Key features

• Nominal inside diameter 3mm, outside diameter 5mm
• Working pressure 0.8 MPa (113 psi) at 20°C
• Operating temperature -5°C to +60°C
• Clear with a blue tint, so flow and blockages are visible
• Virgin PVC conforming to AS/NZS 2070 for plastics in food contact, and EU RoHS compliant
• Good chemical resistance and a moderate level of UV protection
• Supplied cut to length or as a full coil (30 m and 200 m)

Applications

• Instrument and gauge lines
• Dosing and metering pumps
• Aquarium and pond air lines
• Laboratory and test rigs
• Small equipment drains

Compatibility and fitting

• Sizing is by inside diameter: 3mm tube fits a 3mm barb or spigot
• Secure with a hose clamp or crimp ferrule sized to the 5mm outside diameter
• Warming the end in hot water makes it far easier to push onto a tight barb
• For pressure work choose a reinforced hose from the PVC hose range rather than unreinforced tube

Why is the small bore rated higher than the large?

Pressure rating falls as bore grows because the wall has more area to hold back. At 3 mm the tube carries 113 psi; at 50 mm the same material manages 29 psi. Always read the rating for the size you are buying, not the family.

Other bores from 3 mm to 50 mm are in the clear vinyl tube range.

Dispatched from our Brisbane warehouse. Australia-wide delivery, or collect from the warehouse once your order is confirmed ready.