Blood Pressure Tube, Green, Superior

Quick Answer: A blood pressure tube is the flexible rubber tubing that connects the cuff of a sphygmomanometer to its inflation bulb and pressure gauge. This listing is the green tube in the Superior grade.

Where the Tube Sits in a BP Apparatus

In a manual sphygmomanometer, air travels from the squeeze bulb through tubing into the bladder inside the cuff, and a second connection carries the same pressure to the gauge, whether aneroid dial or mercury column. Any leak in that tubing lets pressure fall while the reading is being taken, so an apparently faulty instrument often needs nothing more than new tubing.

Rubber tubing ages. Ozone and light cause fine surface cracks, the rubber hardens, and the ends split where they are repeatedly pulled over connectors. A simple leak check: close the release valve, pump the gauge to a moderate reading and watch it. If the reading drifts down, brush soapy water along the tubing and joints and look for bubbles. Replace the length that leaks, together with the BP monitor bulb if that has also perished.

Superior is the higher grade in LabEquip’s range; green is the colour. The tubing also serves any low-pressure air connection, for example joining a U-tube manometer to a thistle funnel covered with a membrane to show how liquid pressure increases with depth.

Care & Handling

• Push tubing over connectors with a slight twist instead of stretching it hard.
• Store coiled loosely, away from sunlight, heat and electric motors that produce ozone.
• Wipe clean with a damp cloth; avoid oils, solvents and strong disinfectants that swell rubber.
• Check for cracks near the ends at each service, as these fail first.

Specifications

Applications

• Replacing cracked or leaking tubing on manual sphygmomanometers
• Maintaining BP apparatus used in physiology and nursing practicals
• Low-pressure air connections in physics pressure demonstrations
• Connecting inflation bulbs to cuffs in training equipment

Why Choose LabEquip

Hospital biomedical stores, nursing colleges and physiology teaching labs keep spare tubing so BP apparatus can be repaired rather than replaced. LabEquip lists this tube in the General Lab Products range; share the connector sizes you need on the contact page.

Frequently Asked Questions

How do I know the tube is leaking?

With the valve closed and the cuff inflated to a moderate reading, the gauge should hold steady. If it falls, brush soapy water along the tubing and joints; bubbles show the leak.

Why do rubber tubes crack?

Ozone, sunlight and heat break down rubber over time, and repeated stretching at the ends speeds this up. Cracks usually appear first near connectors.

Will this tube fit my sphygmomanometer?

It is sold for sphygmomanometer connections, but connector sizes vary. Check the outside diameter of your connectors and the bore needed when you enquire.

Does the colour matter?

Green is simply the colour of this tube. Some users choose a colour to tell tubing sets apart, but it does not change how the tube works.

Can the tubing be disinfected?

Wipe it with a mild disinfectant that is compatible with rubber and rinse off residues. Strong solvents and oily products can swell or weaken the rubber.

Can I use it for gas or water connections in the lab?

It suits low-pressure air connections. For gas lines or liquids under pressure, use tubing specified for that service.

Last Updated: September 2026