21 Gauge Plastic Tapered TT Adhesive Dispensing Tip TT-21

21 Gauge Smooth Flow Tapered Tip TT-21 Adhesive Dispensing Needle TT21

The "TT-21 plastic needle" refers to a type of tapered, plastic dispensing needle commonly used for industrial application of viscous liquids like adhesives, sealants, and grease. They are designed to ensure a smooth, consistent flow of material and feature a Luer lock hub for a secure connection to dispensing systems.

Features and uses

• Tapered design: Unlike straight dispensing needles, TT (tapered) tips have a conical shape. This smooth, graduated inner diameter is designed to prevent clogging and improve fluid flow, making it ideal for dispensing thick, high-viscosity materials.
• 21-gauge size: The "21G" specification relates to the diameter of the needle. In the dispensing world, the gauge number is inversely proportional to the diameter; a 21-gauge needle has a smaller opening than a 14-gauge needle. The 21G size is suitable for fine-detail work.
• Luer lock connection: These needles typically feature a Luer lock hub, which allows them to securely twist onto a standard syringe barrel, preventing leakage and ensuring a stable connection during the dispensing process.
• Versatile materials: They are commonly used for applying a wide variety of materials, including:
  • Glues and adhesives
  • Solder pastes
  • Inks and paints
  • Greases and sealants
• Applications: TT 21G dispensing needles are used in many industries, including electronics manufacturing, medical device assembly, jewelry making, and automotive production.