Large Bore Silicone Hose Tube — ID 20mm to 235mm, High Temp 300°C, Soft Flexible Rubber Pipe

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Beschreibung

Large Bore Silicone Hose — Flexible High-Temp Rubber Tube for Coolant, Air & Industrial Use

When standard hoses crack under heat, collapse under vacuum, or simply don't come in the diameter you need, a large bore silicone hose is the answer. Whether you're routing coolant through a custom engine build, ducting hot air in an HVAC setup, or plumbing an industrial process line, finding a flexible, heat-resistant tube in the exact inner diameter you need can be a real challenge — especially for oversized runs above 100mm.

Each order includes 1 meter of silicone tube hose in your chosen inner diameter (ID), available from 20mm (≈3/4") to 235mm (≈9.3"). The hose is made from soft, flexible silicone rubber rated to 300°C (572°F), with a smooth bore interior and a white exterior finish. Wall thickness varies by size — typically 3–5mm for smaller diameters and 5–8mm for larger sizes.

Typical use cases include automotive coolant bypass lines, turbo intake couplers, industrial vacuum ducting, aquarium and pond plumbing, and HVAC air transfer sleeves. The wide diameter range makes this silicone rubber pipe a go-to for builders who need a large calibre flexible hose that standard hardware stores don't stock.

ℹ️ Compatibility Note: Select your inner diameter (ID) to match the outer diameter of your fitting or pipe stub. Silicone stretches slightly for a snug fit. Not recommended for petroleum fuels or strong solvents — verify chemical compatibility before use.

✅ Key Features of These Large Bore Silicone Hose Tubes

  • 🌡️300°C High-Temp Rating — Withstands continuous service up to 300°C (572°F), making this silicone rubber tube suitable for engine bays, exhaust-adjacent routing, and industrial heat transfer lines.
  • 📏Wide Diameter Range (20–235mm) — Available in 47 sizes from 20mm (≈3/4") to 235mm (≈9.3"), covering applications where large calibre flexible hose is hard to source locally.
  • 🔄Soft, Flexible Wall Construction — The silicone compound remains pliable at both high and low temperatures, resisting kinking and collapse even in tight routing paths.
  • 🛡️UV, Ozone & Moisture Resistant — Silicone does not degrade under UV exposure or ozone, making this high-temp silicone pipe a reliable choice for outdoor, marine, and underhood environments.
  • ✂️Cut-to-Length Convenience — Each piece ships as 1 meter, and silicone cuts cleanly with a utility knife, so you can trim to the exact length your installation requires without waste.
  • 🔧Standard Clamp Compatible — Works with worm-drive and T-bolt hose clamps in matching sizes, allowing secure, leak-free connections without special tooling or adhesives.

📐 Technical Specifications — Large Bore Silicone Tube Hose

Product Type Silicone Tube Hose (Large Calibre)
Material Silicone Rubber
Color / Finish White
Inner Diameter (ID) Range 20mm (≈3/4") — 235mm (≈9.3")
Length per Order 1 Meter (≈39.4")
Wall Thickness Typically 3–5mm (small IDs) / 5–8mm (large IDs) — See variant options
Max Continuous Temperature 300°C (572°F)
Flexibility Soft, flexible — kink-resistant under normal bend radii
UV / Ozone Resistance Yes
Recommended Clamp Type Worm-drive or T-bolt hose clamp (sized to hose OD)
Fluid Compatibility Water, coolant (glycol), compressed air — Contact us to confirm for other fluids
Country of Manufacture China
⚠️ Sizing Tip: The diameter listed is the inner diameter (ID) of the hose. Measure the outer diameter of your fitting or pipe stub and select the matching ID. If you are unsure of wall thickness for a specific size, contact us before ordering.

❓ Frequently Asked Questions

How do I choose the right inner diameter for my application?

Measure the outer diameter of the fitting or pipe stub you need to connect, then select the silicone hose ID that matches. For example, a 25mm (≈1") fitting typically requires a 25mm ID hose. When in doubt, size down slightly — silicone stretches to form a secure seal. Available sizes range from 20mm (≈3/4") to 235mm (≈9.3").

What is the maximum temperature this silicone hose can handle?

This silicone tube is generally rated to 300°C (572°F) continuous service. Short-term peak exposure may be tolerated above this range, but sustained temperatures beyond the rating can degrade the material over time. For applications near exhaust manifolds or turbochargers, verify that radiant heat does not exceed the rating.

Can this hose be used outdoors or in wet environments?

Yes. Silicone is inherently resistant to UV radiation, ozone, and moisture, making it suitable for outdoor, underhood, and marine-adjacent applications. It does not corrode, stiffen, or crack under typical weather exposure — unlike EPDM or PVC alternatives.

Is this hose compatible with coolant, water, and air systems?

This silicone tube is generally compatible with water, glycol-based coolant, and compressed air. It is not recommended for use with petroleum-based fuels, oils, or strong solvents. Always verify chemical compatibility for your specific fluid before installation. Contact us if you need confirmation for a specific application.

How do I secure the hose to a fitting?

In most cases, a standard worm-drive hose clamp sized to match the hose OD is sufficient for low-to-medium pressure applications. For higher-pressure systems, use a T-bolt clamp and ensure the fitting has a bead or barb to prevent blow-off. No adhesives or thread sealants are needed for a properly clamped silicone connection.

Can I cut this hose to a shorter length?

Yes. Silicone hose cuts cleanly with a sharp utility knife or dedicated hose cutter. Each listing provides 1 meter per order. If you need a length shorter than 1 meter, simply cut to size — the cut ends remain smooth and seal reliably with a clamp.

What wall thickness should I expect for my selected diameter?

Wall thickness varies by diameter. Smaller diameters (20–50mm) typically have walls of approximately 3–5mm, while larger diameters (100mm and above) generally range from 5–8mm. If your application has a specific wall thickness requirement, contact us to confirm the exact dimension for your selected size before ordering.

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

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