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Clear flexible tubing coil 10 feet length 3/8 inch inner diameter 5/8 inch outer diameter

PrimoChill

PrimoChill PrimoFlex LRT 3/8in ID 5/8in OD 10ft DIY Cooling

SKU CH-DPY6-G1R2J

Flexible water-cooling tubing with 3/8in inner diameter and 5/8in outer diameter, supplied in a ten-foot length with system-prep fluid and coolant

  • Product typeCPU Block

Color Clear

  • Trusted by elite builders for over 20 years
  • Manufactured in the USA to ISO 9001:2015 standards
  • Advanced LRT formulation ensures broad closed-loop compatibility
  • Flexible design simplifies custom loop installation
  • Includes 10 feet of tubing with System Prep and Coolant

Tubing for custom water-cooling loops

PrimoChill PrimoFlex LRT is flexible tubing built for DIY liquid-cooling systems. It targets enthusiasts assembling their own closed-loop setups who need reliable, USA-made hose that meets ISO 9001:2015 production standards. The 10-foot length suits single-loop builds with room for routing and trimming.

Compression or barb fitting compatibility limits

The hose fits 3/8in ID by 5/8in OD compression fittings or 3/8in barb with 5/8in clamp. Minor sealing issues have been observed with strict-tolerance brands such as Bitspowr and Lamptron, so installers should verify fit before final assembly. Alcohol, ethylene glycol and other harmful chemicals are prohibited and will void coverage.

Inner diameter 3/8in with 1/8in wall thickness

The 3/8in inner diameter and 1/8in wall define flow capacity and bend radius for the loop. Dyed coolants will stain the tubing over time, so clear fluids are recommended for appearance-critical builds. Results vary with component mix, fluid choice and flow rate.

How it compares

Measured against everything we stock in Heatsinks & Water Blocks, at today’s prices. Recalculated every night.

Price $29.99
Pricier than about 71% of the 609 comparable items (median $15.99).

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Specifications

Product
Product typeCPU Block

Questions about this item

Should I pick the 10 ft length or is there another size available?

This listing supplies a single 10 ft coil of 3/8 in. ID by 5/8 in. OD tubing; no other lengths are offered in this pack.

How does the 1/8 in. wall thickness behave once the loop is pressurised?

The 1/8 in. wall keeps its shape under normal loop pressure, resists kinking on tight bends and stays flexible enough for clean routing around blocks and radiators.

Which fittings work with the 3/8 in. ID and 5/8 in. OD dimensions?

Use 3/8 in. x 5/8 in. compression fittings or 3/8 in. barbs secured with 5/8 in. clamps; strict-tolerance brands such as Bitspower or Lamptron may need extra care.

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