Techcon TE721150PK 21 Gauge Purple Dispensing Needle, 50 Pack

Description

TE721150PK needle is a Techcon TE Series 21 gauge dispensing tip with a 1-1/2 inch stainless-steel cannula and purple polypropylene hub. The 50 pack supports controlled fluid placement from syringe barrels, valves, and luer lock dispensing setups.

TE721150PK needle Benefits

• 21 gauge outlet supports controlled beads and deposits from many shop fluids.
• 1-1/2 inch length gives extra reach into housings, fixtures, and recessed areas.
• Purple hub color helps operators identify gauge size quickly at the bench.
• Double-helix polypropylene hub helps secure the tip to compatible syringe barrels.
• Electro-polished, burr-free cannula supports consistent flow through the metal tube.

This tip is useful when the job needs a longer rigid needle than the common 1/2 inch format. It fits fine adhesive placement, primer application, oiling, coating, and assembly-fluid work where deposit size matters.

Where TE721150PK needle Fits

• Adhesive dots and short beads in electronics and small assemblies.
• Primer or activator placement along narrow bond areas.
• Controlled solvent, oil, or coating transfer from syringe systems.
• Valve-fed dispensing cells that need a 21 gauge rigid TE tip.
• Maintenance stock for benches using multiple color-coded needle sizes.

Setup And Use

Match the gauge to the fluid viscosity, target deposit, and dispense pressure. Start with low pressure and increase gradually until the bead is stable. Excess pressure can cause splash, tailing, or material waste when the tip is too small for the fluid.

Keep tips in the package until use and replace them when the cannula bends, clogs, or starts changing deposit size. For automated work, confirm clearance and needle length before cycling parts.

Technical Details And Documentation

Techcon lists TE721150PK as a 21 gauge, 1-1/2 inch purple TE needle in a 50 pack, with 100 psi maximum operating pressure. For current product-family information, review Techcon before production use.

Ordering Help

For related TE needles, barrels, adapters, and valves, browse Chemical Concepts dispensers, mixers, and nozzles. For help matching gauge, length, and pressure to your material, call (800) 220-1966 or email [email protected].