Kuri Tec Series 2600 Clear Polyurethane Tubing C2600-0608X100 | 3/8 in. ID × 1/2 in. OD — Per Foot

Kuri Tec Series 2600 Clear Polyurethane Tubing — 3/8 in. ID × 1/2 in. OD | Per Foot

Overview

Kuri Tec Series 2600 is a clear, flexible 85 Shore A ether-based polyurethane tubing with high resistance to abrasion, fuel, oil, and solvents. The 3/8 in. ID × 1/2 in. OD size is a common choice for fluid-transfer, lubrication, and low-pressure feed-and-return line applications where clear construction allows visual monitoring of fluid flow. It is priced and sold here per foot, cut from a full 100 ft coil.

Important — not a certified marine fuel hose: Series 2600 is a high-quality polyurethane transfer tubing with excellent fuel and oil resistance. It is not SAE J1527 or USCG-approved marine fuel hose. For engine fuel-supply or fuel-return lines where a specific marine fuel-hose certification is required by regulation, use a hose rated to the applicable standard. Series 2600 is appropriate for non-regulated fluid-transfer, lubrication, and accessory-line applications where polyurethane tubing is suitable.

Intended Applications

• Fluid-transfer and feed/return lines (non-certified)
• Lubrication lines and metering pump connections
• Air lines and pneumatic control tubing
• Abrasive slurry and granular-material transfer
• Robotics and automation control lines
• Insulating sleeves
• Low-pressure accessory lines where clear tubing and fuel/oil resistance are required
• Applications requiring visual flow monitoring

Dimensions

• Inside diameter: 3/8 in. / 9.5 mm
• Outside diameter: 1/2 in. / 12.7 mm
• Wall thickness: 1/16 in. / 1.6 mm
• Hardness: 85 ±3 Shore A
• Working pressure: 45 psi / 3.1 bar at 70°F; 30 psi / 2.1 bar at 122°F
• Temperature range: -40°F to 175°F / -40°C to 80°C

Material Properties

• High abrasion and cut resistance
• High resistance to fuel, oil, and solvents
• Good flex-fatigue and hydrolysis resistance
• Clear construction for visual flow monitoring
• Phthalate-free and silicone-free
• Working pressure decreases as operating temperature increases — derate accordingly above 70°F
• Note: Kuriyama Series 2810 ester-based tubing is recommended where exceptional oil and fuel resistance is the primary requirement

When to Replace

• Hardening or loss of flexibility develops
• Cracks, cuts, or abrasion damage appear on the tube wall
• The tubing becomes permanently kinked or flattened
• Leakage develops at fittings or along the tube body
• Chemical exposure causes swelling, softening, or surface deterioration
• The tubing becomes cloudy enough to prevent useful visual inspection
• Operating conditions have exceeded the rated pressure or temperature range

Installation Notes

• Cut the tubing squarely with a clean, sharp blade — angled cuts affect sealing at push-fit fittings
• Match fittings to the 3/8 in. / 9.5 mm ID and confirm the OD fits any retaining collet or compression fitting
• Avoid excessively tight bend radii — kinking reduces flow and weakens the tube wall over time
• Keep tubing away from sharp edges, abrasive surfaces, and hot exhaust components
• Use clamps or fittings rated for non-reinforced polyurethane tubing at the applicable pressure
• Verify chemical compatibility with the intended fluid before installing in a new application
• Confirm system pressure stays within the temperature-adjusted working pressure for your operating conditions
• Kuriyama notes that pressure ratings depend on correct coupling procedures — follow the fitting manufacturer’s installation instructions

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Technical FAQ

Can I use Series 2600 tubing as a marine fuel line?

Series 2600 has excellent resistance to fuel and solvents, but it is not a certified marine fuel hose (SAE J1527 / USCG Type A or B). For engine fuel-supply and fuel-return lines where a specific certification is required by ABYC, USCG, or classification-society standards, use hose rated to that standard. Series 2600 is appropriate for accessory, lubrication, and fluid-transfer applications where polyurethane tubing is suitable and no specific fuel-hose certification is required.

How is this product priced and sold?

This listing is sold per foot, cut from a 100 ft coil. Order the number of feet you need. The full-coil reference part number is 2600-0608X100 (100 ft / 30.5 m).

What fittings work with 3/8 in. ID × 1/2 in. OD polyurethane tubing?

Barbed fittings sized for 3/8 in. ID tubing, push-to-connect fittings sized for 1/2 in. OD, and compression fittings designed for non-reinforced tubing are all commonly used. Confirm the fitting type is rated for the intended pressure and fluid, and follow the fitting manufacturer’s installation procedure. Clamp or secure barbed connections appropriately for the application.

What is the minimum bend radius for Series 2600 tubing?

Kuriyama’s published data for Series 2600 in this size should be consulted for the specific minimum bend radius. As a general rule for polyurethane tubing, avoid bending to a radius tighter than 4× the OD (approximately 2 in. / 50 mm for this size) to prevent kinking, flow restriction, and wall stress. Route the tubing with gradual curves where possible.

How does operating temperature affect the pressure rating?

Working pressure decreases as temperature increases. At 70°F / 20°C the rating is 45 psi / 3.1 bar; at 122°F / 50°C it drops to 30 psi / 2.1 bar. For applications near hot engine components, confirm the actual tubing surface temperature stays within the rated range and derate the pressure accordingly. Do not use Series 2600 where sustained temperatures above 175°F / 80°C are expected.

Is Series 2600 food-safe or FDA-compliant?

Kuriyama describes Series 2600 as manufactured from FDA-compliant polyurethane material. If FDA compliance is a specific requirement for your application, confirm with Kuriyama’s current product documentation as formulations can vary by production run.

Parts Desk Insights

Best use case: Series 2600 C2600-0608X100 is the right choice for customers who need a flexible, clear, fuel- and oil-resistant polyurethane tubing for low-pressure accessory lines, lubrication runs, metering pump connections, or fluid-transfer applications where visual flow monitoring is useful. The per-foot format suits customers who need a specific cut length for a custom installation rather than a full coil. At $3.48/ft it is accessible for small-quantity marine accessory and rigging projects. The most common use cases in a marine context are low-pressure fluid-transfer lines, bilge-pump accessory connections, and non-engine-primary lubrication runs.

Common customer questions: The most frequent issue is customers assuming this tubing can be used as a primary engine fuel line because it is fuel-resistant and clear. Always clarify that Series 2600 is a fluid-transfer tubing without SAE J1527 / USCG marine fuel-hose certification — for regulated engine fuel lines, direct them to a certified marine fuel hose. The second common question is fitting compatibility — confirm whether the customer needs barbed, push-to-connect, or compression fittings, and whether they are sizing by ID (3/8 in.) or OD (1/2 in.), since mixing up those dimensions is a frequent ordering mistake.