TuoLauthon Silicone Coupler 2.5–3in Straight Reducer Hose — 5‑Ply, 6mm Wall with Stainless Clamps

TuoLauthon Silicone Coupler is a 5-ply, heavy-duty straight reducer hose that adapts 2.5" to 3" inner diameters while including stainless clamps for secure, high-temperature connections.

This reinforced silicone straight reducer is built for demanding environments where flexible, heat- and ozone-resistant couplers are needed. Constructed from five plies with a 6mm wall thickness, the hose balances flexibility and strength to withstand a wide temperature range and substantial pressure. It’s intended for air, coolant, intercooler, and general industrial or marine ducting applications — not for fuel or oil transfer.

How does this coupler handle heat and cold extremes?

The TuoLauthon 5-ply silicone composition performs across extreme temperatures, maintaining flexibility and integrity from deep freeze to high-heat conditions. That wide range helps preserve seals and reduces the chance of cracking or hardening in harsh climates.

• Operating range: -76°F (-60°C) to +500°F (+260°C)
• Silicone compound resists hardening and brittleness at low temps
• High-temperature tolerance prevents softening or deformation

What pressure can the reducer hose withstand and how safe is it?

This coupler is engineered with a reinforced five-layer wall to resist internal pressures encountered in many industrial and turbocharger plumbing scenarios. It lists conservative working pressure values and a higher bursting threshold to help designers account for safety margins.

• Working pressure range: 0.3 MPa (43.5 PSI) to 1.5 MPa (217.5 PSI)
• Bursting pressure: 2.0 MPa for clear safety buffer
• 6 mm wall thickness adds mechanical strength and puncture resistance

Will it fit my application and what comes in the package?

The reducer covers hoses with inner diameters from 2.5 inches (63 mm) up to 3 inches (76 mm) and provides a straight coupling length to bridge short gaps. Each package includes the single coupler plus two stainless steel clamps, so you can install right away without extra hardware.

• Inner diameter compatibility: 2.5" to 3" (63–76 mm)
• Straight length: 4" (102 mm) for compact installations
• Includes 2 stainless clamps—no additional purchase required

Is this coupler suitable for marine and outdoor use?

Yes — the silicone blend and construction resist UV exposure and ozone, which makes the reducer suitable for outdoor, marine, and many industrial environments where weathering is a concern. However, it’s not formulated for direct fuel or oil transfer, so avoid those fluids.

• UV and ozone resistant for prolonged outdoor life
• Commonly used in marine intake and cooling ducting
• Not recommended for oil, gasoline, or fuel lines

Who is this for: The TuoLauthon Silicone Coupler is aimed at mechanics, fabricators, marine technicians, and hobbyists who need a reliable, short straight reducer for air, coolant, intercooler, or general ducting tasks. Choose this hose when you require high-temperature tolerance, reinforced pressure capability, and immediate installability thanks to included stainless clamps. If your application involves fuel or oil transfer, select a product specifically rated for those fluids instead.