PTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mm
PTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mm
PTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mm
PTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mm
PTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mm
PTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mm
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PTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mmPTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mmPTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mmPTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mmPTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mmPTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mm

PTFE 4:1 Heat Shrink Tubing 260°C High Temp — 0.5mm to 40mm

HomeDIYer
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By HomeDIYer®

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$3.11 USD
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In stock (500 units), ready to be shipped

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Description

 

PTFE 4:1 Heat Shrink Tubing — Chemical-Resistant High-Temp Sleeving for Demanding Applications

When standard heat shrink fails — melting under high heat, cracking from chemical exposure, or slipping off irregular shapes — engineers, lab technicians, and serious DIYers reach for PTFE 4:1 heat shrink tubing. Rated to 260°C (500°F) continuous service, this tubing is built for environments where ordinary polyolefin simply cannot perform.

Each piece is 1 meter (≈39.4") in length and available in diameters from 0.5mm (≈0.020") up to 40mm (≈1.57"). The 4:1 shrink ratio means the tubing recovers to one-quarter of its supplied diameter, delivering a tight, conforming fit over stepped connectors, cable bundles, and irregular geometries. Multiple quantity options (1–10 pieces per order) let you stock exactly what you need.

Typical use cases include high-temperature wire insulation in aerospace and automotive wiring harnesses, chemical-resistant sleeving for laboratory tubing and fluid-handling lines, and low-friction protective jacketing for precision mechanical components such as guide rods and sensor leads.

🔵 Compatibility Note: This tubing follows standard metric diameter sizing. Verify your component's outer diameter before ordering. The 4:1 ratio means the recovered ID is approximately 25% of the listed supplied diameter. For non-standard sizes or bulk orders, contact us to confirm fit.

✅ Key Features of These PTFE 4:1 Heat Shrink Tubes

  • 🌡️260°C Continuous Service Rating — Withstands sustained high-temperature environments where standard polyolefin heat shrink tubing would degrade or melt, making it suitable for engine bays, industrial ovens, and high-power electronics.
  • ⚗️Broad Chemical Resistance — PTFE is inert to virtually all acids, bases, solvents, and fuels. Ideal for chemical-resistant wire sleeving in laboratory, pharmaceutical, and industrial fluid-handling applications.
  • 🔄4:1 Shrink Ratio — Recovers to one-quarter of the supplied diameter, providing a secure, conforming fit over connectors, stepped components, and cable bundles that a standard 2:1 ratio tubing cannot grip reliably.
  • 📏Wide Diameter Range (0.5mm–40mm) — Covers fine instrument wire up to large cable bundles and hose assemblies, reducing the need to source multiple product lines for a single project.
  • 🧲Low Coefficient of Friction — The naturally slick PTFE surface reduces drag on moving parts, making this tubing a practical choice for low-friction protective jacketing on guide rods, cables, and sliding mechanisms.
  • 🌧️UV and Moisture Resistant — Does not absorb water and resists UV degradation, supporting long-term outdoor use and harsh-environment wire insulation without cracking or embrittlement.

📐 Technical Specifications — PTFE Heat Shrink Tubing

Material PTFE (Polytetrafluoroethylene)
Shrink Ratio 4:1
Max Continuous Service Temp 260°C (500°F)
Shrink Activation Temp Typically ~327°C (620°F)
Supplied Diameter Range 0.5mm (≈0.020") – 40mm (≈1.57")
Length per Piece 1 meter (≈39.4")
Available Quantities 1, 2, 3, 4, 5, or 10 pieces
Color See variant options
Recovered Wall Thickness Contact us to confirm by diameter
Dielectric Strength See variant options
Chemical Resistance Resistant to acids, bases, solvents, fuels, oxidizers
UV Resistance Yes
Flammability See variant options
Ships From US Warehouse
⚠️ Sizing Tip: PTFE heat shrink requires higher activation temperatures than standard tubing. A heat gun with adjustable temperature control is strongly recommended. Do not use an open flame.

❓ Frequently Asked Questions

How do I choose the right diameter for my application?

Measure the outer diameter of the object you need to cover before shrinking. Because this tubing has a 4:1 shrink ratio, the recovered (final) inner diameter is typically about 25% of the supplied diameter. For example, a 4mm (≈5/32") tube will recover to approximately 1mm (≈3/64"). Always choose a supplied diameter that is larger than your component, with enough margin for the 4:1 ratio to grip securely.

What temperature is needed to shrink this tubing?

PTFE heat shrink tubing generally requires a higher activation temperature than standard polyolefin tubing — typically around 327°C (620°F) to initiate shrinking. However, once shrunk, it is rated to withstand continuous service temperatures up to 260°C (500°F). A heat gun with precise temperature control is recommended; avoid open flames.

Can this tubing be used outdoors or in harsh environments?

Yes. PTFE is inherently resistant to UV radiation, moisture, and most chemicals, making it well-suited for outdoor and harsh-environment applications. It does not absorb water and maintains its properties across a wide temperature range, from cryogenic conditions up to 260°C continuous use.

What chemicals is PTFE heat shrink tubing resistant to?

PTFE is resistant to virtually all industrial chemicals, including acids, bases, solvents, fuels, and oxidizing agents. It is generally considered chemically inert. The only substances known to attack PTFE are molten alkali metals and certain fluorinating agents under extreme conditions.

Is this tubing compatible with standard wire gauges and connectors?

Yes. The range of supplied diameters (0.5mm to 40mm) covers most standard wire gauges, cable bundles, and connector bodies. For wire insulation, select a diameter that fits loosely over the wire before shrinking. For connector strain relief, choose a size that fits over the connector body with a small amount of clearance.

How does a 4:1 shrink ratio compare to standard heat shrink?

Standard heat shrink tubing typically has a 2:1 shrink ratio, meaning it recovers to half its original diameter. A 4:1 ratio recovers to one-quarter of the original diameter, providing a much tighter, more secure fit over irregular shapes, stepped components, or connectors with varying diameters. This makes 4:1 tubing more versatile for complex assemblies.

What is the wall thickness after shrinking?

Wall thickness after recovery varies by diameter. In general, PTFE heat shrink tubing has a relatively thin recovered wall compared to adhesive-lined polyolefin types. For specific recovered wall thickness values, please contact us to confirm for your chosen diameter.

🛒 Select your diameter and quantity above, then add to cart — ships from our US warehouse.

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