KQ2C Push Fit Female End Cap Plastic

SOLH KQ2C Series Push-In Cap | Pneumatic Tube Plug for KQ2 One-Touch Fittings

Brand: SOLH by Richge Technology | SMC KQ2C Equivalent Push-In Tube Plug for KQ2 Series Fittings

1. Product Overview

     KQ2C is a dedicated push-in cap (tube plug) matched with SOLH KQ2 series pneumatic fittings. It is designed for temporary sealing of unused push-in air tube ports to rapidly close air circuits, an essential accessory for pneumatic system commissioning and reserved port maintenance.

2. Model Code Naming Rule

  Format: KQ2C□□
     KQ2: SMC 2nd generation one-touch fitting series
     C: Cap, push-in tube plug
     □□: Matched tube outer diameter (mm)
  Examples:
     KQ2C04: Fits Φ4mm push-in port
     KQ2C06: Fits Φ6mm push-in port (most popular size)
     KQ2C08: Fits Φ8mm push-in port

3. Structure & Core Features

3.1 Structural Design

      Cylindrical push-in design with profile matching air tubing, directly inserted into one-touch ports

      Sealing principle: Compress internal NBR seal inside fitting after insertion to form reliable sealing, no extra tools required

      Anti-drop design: Locked firmly by stainless steel jaws inside push-in port after insertion. Press the release collar on fitting to remove the cap easily.

3.2 Key Advantages

     • Plug-and-play: Tool-free installation, insert directly to seal port, fast assembly & disassembly

     • Full compatibility: Works with all KQ2 series one-touch ports including T/L/U/E/UD/UT/VD/VT types

     • Reliable performance: Rated for full system working pressure, supports vacuum down to -100kPa with zero leakage risk

     • Compact size: Saves installation footprint, ideal for control cabinets and tight internal machine spaces

     • Durable material: PBT engineering plastic body + NBR sealing ring, impact-resistant and corrosion-resistant for long service life

4. Standard Model List

5. General Technical Specifications

6. Application Scenarios

     • Commissioning reserved port sealing: Seal unused push-in ports during machine commissioning to prevent air leakage; connect tubing after test finished

     • Spare port closure: Seal spare ports on valve islands and manifold fittings (KQ2UD/KQ2UT) to block dust and accidental air leakage

     • Temporarily disabled circuit sealing: Seal ports of temporarily deactivated cylinder circuits during equipment maintenance without affecting other working circuits

     • Vacuum circuit anti-leakage: Seal unused suction cup ports on vacuum equipment to maintain stable vacuum level

7. Usage Notes

     • Compatibility check: Select cap matching port size strictly. Φ6 port only accepts KQ2C06; mismatched size causes seal failure or failed insertion.

     • Full insertion: Push cap fully into port until click sound is heard, confirming jaws locked for reliable sealing.

     • Removal method: Press release collar on fitting while pulling cap outward. Do not pull violently to avoid damaging internal jaws.

     • Working condition limit: Not suitable for corrosive gas, high-temperature steam and other special media, only for standard pneumatic & vacuum applications.

     • Maintenance & replacement: Replace cap when seal ring is aged or damaged to avoid air leakage caused by failed sealing.

8. Comparison: KQ2C Push-In Cap vs Threaded Plug